<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-07-15</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001851908</issuerCik>
        <issuerName>Black Spade Acquisition Co</issuerName>
        <issuerTradingSymbol>BSAQU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001636584</rptOwnerCik>
            <rptOwnerName>TAM CHI WAI DENNIS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>SUITE 2902, 29/F, THE CENTRIUM</rptOwnerStreet1>
            <rptOwnerStreet2>60 WYNDHAM STREET, CENTRAL</rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState>K3</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>HONG KONG</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Co-CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Class B ordinary shares</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A ordinary shares</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>300000</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Class B ordinary shares of the issuer will automatically convert into Class A ordinary shares of the issuer on a one-for-one basis (subject to certain adjustments, including share sub-divisions, share capitalizations, reorganizations, recapitalizations and other transactions) concurrently with or immediately following the consummation of the issuer's initial business combination, as described in the section entitled &quot;Description of Securities&quot; in the issuer's registration statement on Form S-1 (File No. 333-257517) filed with the Securities and Exchange Commission on June 29, 2021. The Class B ordinary shares have no expiration date.</footnote>
        <footnote id="F2">Up to 39,130 of the Class B ordinary shares reported herein will be surrendered to the issuer for no consideration after the closing of the initial public offering depending on the extent to which the underwriters' over-allotment option is exercised.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Chi Wai Dennis Tam</signatureName>
        <signatureDate>2021-07-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
