-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Dl2mK4tutMIw+DerMCc1DUShoaoRFKylmuEDXuubIpFBSY3OSvVMeQoOfGW66b8i
 5fG1x4Mb9pPLWT1aNxov/w==

<SEC-DOCUMENT>0000903921-04-000001.txt : 20040325
<SEC-HEADER>0000903921-04-000001.hdr.sgml : 20040325
<ACCEPTANCE-DATETIME>20040325145717
ACCESSION NUMBER:		0000903921-04-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040323
FILED AS OF DATE:		20040325

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CDI CORP
		CENTRAL INDEX KEY:			0000018396
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-HELP SUPPLY SERVICES [7363]
		IRS NUMBER:				232394430
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1717 ARCH STREET
		STREET 2:		35TH FLOOR
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19103-2768
		BUSINESS PHONE:		2155692200

	MAIL ADDRESS:	
		STREET 1:		1717 ARCH STREET
		STREET 2:		35TH FLOOR
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19103-2768

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMPREHEMSIVE DESINGNERS INC
		DATE OF NAME CHANGE:	19731120

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GARRISON WALTER R
		CENTRAL INDEX KEY:			0000903921
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05519
		FILM NUMBER:		04689525

	BUSINESS ADDRESS:	
		STREET 1:		1717 ARCH STREET
		STREET 2:		35TH FLOOR
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19103-2768
		BUSINESS PHONE:		2155692200

	MAIL ADDRESS:	
		STREET 1:		1717 ARCH STREET
		STREET 2:		35TH FLOOR
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19103-2768
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-03-23</periodOfReport>

    <issuer>
        <issuerCik>0000018396</issuerCik>
        <issuerName>CDI CORP</issuerName>
        <issuerTradingSymbol>CDI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000903921</rptOwnerCik>
            <rptOwnerName>GARRISON WALTER R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CDI CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>1717 ARCH STREET, 35TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>PHILADELPHIA</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19103-2768</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Chairman of the Board</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Purchase Plan Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-03-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-05-03</value>
            </exerciseDate>
            <expirationDate>
                <value>2010-05-03</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3389</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Purchase Plan Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-03-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>15</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-05-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2011-05-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>15</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4953</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Stock Purchase Plan (SPP) units are convertible into shares of Common Stock on a 1-for-1 basis.</footnote>
        <footnote id="F2">The Reporting Person acquired these additional SPP units in connection with the $.09 per share dividend paid on CDI Corp. Common Stock on March 23, 2004.  The number of additional units was calculated using the closing price of CDI Corp. Common Stock on March 23, 2004, which was $29.40 per share.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Walter R. Garrison</signatureName>
        <signatureDate>2004-03-24</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----