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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 Qia46sxI2fi5qpeSwJTK/g==

<SEC-DOCUMENT>0001179124-09-000131.txt : 20090324
<SEC-HEADER>0001179124-09-000131.hdr.sgml : 20090324
<ACCEPTANCE-DATETIME>20090324151402
ACCESSION NUMBER:		0001179124-09-000131
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090319
FILED AS OF DATE:		20090324
DATE AS OF CHANGE:		20090324

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WADSWORTH ROBERT H
		CENTRAL INDEX KEY:			0001221111

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-08382
		FILM NUMBER:		09701268

	MAIL ADDRESS:	
		STREET 1:		6732 E FANFOL DR
		CITY:			PARADISE VALLEY
		STATE:			AZ
		ZIP:			85253

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DWS STRATEGIC INCOME TRUST
		CENTRAL INDEX KEY:			0000919708
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1130

	BUSINESS ADDRESS:	
		STREET 1:		345 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10154-0004
		BUSINESS PHONE:		212-454-6778

	MAIL ADDRESS:	
		STREET 1:		345 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10154-0004

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SCUDDER STRATEGIC INCOME TRUST
		DATE OF NAME CHANGE:	20010123

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KEMPER STRATEGIC INCOME TRUST
		DATE OF NAME CHANGE:	20001213

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KEMPER STRATEGIC INCOME FUND
		DATE OF NAME CHANGE:	19940303
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2009-03-19</periodOfReport>

    <dateOfOriginalSubmission>2009-03-20</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000919708</issuerCik>
        <issuerName>DWS STRATEGIC INCOME TRUST</issuerName>
        <issuerTradingSymbol>KST</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001221111</rptOwnerCik>
            <rptOwnerName>WADSWORTH ROBERT H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6732 E FANFOL DR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PARADISE VALLEY</rptOwnerCity>
            <rptOwnerState>AZ</rptOwnerState>
            <rptOwnerZipCode>85253</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-03-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>666</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.79</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9734</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Previously reported total was incorrect.  Director has since informed me fo correct number of shares held both directly and in IRA account.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Anjie LaRocca, Attorney-in-Fact</signatureName>
        <signatureDate>2009-03-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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