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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2020-12-04</periodOfReport>

    <dateOfOriginalSubmission>2020-12-07</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001310488</issuerCik>
        <issuerName>BIOFORCE NANOSCIENCES HOLDINGS, INC.</issuerName>
        <issuerTradingSymbol>BFNH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001663787</rptOwnerCik>
            <rptOwnerName>KAISER RICHARD KAISER</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3419 VIRGINIA BEACH BLVD, UNIT 252</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>VIRGINIA BEACH</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>23452</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-12-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3000000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.001</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5050000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Convetible Preferred 'A'</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.001</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-12-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.001</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2020-03-31</value>
            </exerciseDate>
            <expirationDate>
                <value>2040-03-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3000000</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On December 4, 2020, BioForce Nanosciences Holdings, Inc. (The &quot;Company&quot; or the &quot;Registrant&quot;) issued 3,000,000 shares of its common stock to the reporting individual in exchange for 500,000 shares of its Preferred Series 'A' shares.  These shares were issued pursuant to an exemption from registration provided by Section 4(2) of the Securities Act of 1933. The issuance was not a public offering as defined in Section4(2)due to the limited number of persons that received the shares, and the matter of the issuances.  In addition, the transferee of the common stock represented that they had the necessary investment intent as required by Section 4(2) and agreed to receive shares containing a legend that states the securities were restricted pursuant to Rule 144 of the Securities Act.</footnote>
    </footnotes>

    <remarks>This Amendment No. 3 on FORM 4/A is to correct the wrongly input of the &quot;Date Exercisable and Expiration Date&quot; on Column #6 on TABLE II.  The Date was correctly input on the original filing, FORM 4 on Dec.07, 2020, but the two prior amendments on FORM 4/A had these dates wrong as being Date Exercisable - 12/31/2020 and Expiration Date -12/31/2040.  The Correct dates are now input correctly on this Amendment No. 3 on FORM 4/A as being Date Exercisable- 03/31/2020 and Expiration Date - 03/31/2040.</remarks>

    <ownerSignature>
        <signatureName>/s/ Richard Kaiser</signatureName>
        <signatureDate>2020-12-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
