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

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-08-24</periodOfReport>

    <issuer>
        <issuerCik>0000096021</issuerCik>
        <issuerName>SYSCO CORP</issuerName>
        <issuerTradingSymbol>SYY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001128600</rptOwnerCik>
            <rptOwnerName>CARRIG KENNETH J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1390 ENCLAVE PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77077</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Exec VP &amp; Chief Admin Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-08-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12752</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>27871.4</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares issued pursuant to the Sysco Corporation 2005 Management Incentive Plan (the &quot;MIP&quot;).</footnote>
        <footnote id="F2">Pursuant to the MIP, the Company issues to each MIP participant shares of common stock with a market value equal to 28% of the participant's cash bonus amount (for the fiscal year ended June 30, 2007 such amount was valued at $32.99 per share).</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Michael C. Nichols, attorney-in-fact</signatureName>
        <signatureDate>2007-08-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0202
4
2007-08-24
0000096021
SYSCO CORP
SYY
0001128600
CARRIG KENNETH J
1390 ENCLAVE PARKWAY
HOUSTON
TX
77077
0
1
0
0
Exec VP & Chief Admin Officer
Common Stock
2007-08-24
4
A
0
12752
A
27871.4
D
Shares issued pursuant to the Sysco Corporation 2005 Management Incentive Plan (the "MIP").
Pursuant to the MIP, the Company issues to each MIP participant shares of common stock with a market value equal to 28% of the participant's cash bonus amount (for the fiscal year ended June 30, 2007 such amount was valued at $32.99 per share).
/s/ Michael C. Nichols, attorney-in-fact
2007-08-24