-----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,
 H3PTffLsw3Eao1S/q+9U274mLoSEZgLHvBS9ku4S3N7tB+drTanwECtEkuueUf7K
 /5lXJUdfel2ExG6hvYWp1w==

<SEC-DOCUMENT>0001225208-06-006257.txt : 20061218
<SEC-HEADER>0001225208-06-006257.hdr.sgml : 20061218
<ACCEPTANCE-DATETIME>20061218175431
ACCESSION NUMBER:		0001225208-06-006257
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20061214
FILED AS OF DATE:		20061218
DATE AS OF CHANGE:		20061218

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			US BioEnergy CORP
		CENTRAL INDEX KEY:			0001332341
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL ORGANIC CHEMICALS [2860]
		IRS NUMBER:				201811472

	BUSINESS ADDRESS:	
		STREET 1:		5500 CENEX DRIVE
		STREET 2:		MAIL STATION 175
		CITY:			INVER GROVE HEIGHTS
		STATE:			MN
		ZIP:			55077
		BUSINESS PHONE:		(651) 355-8300

	MAIL ADDRESS:	
		STREET 1:		5500 CENEX DRIVE
		STREET 2:		MAIL STATION 175
		CITY:			INVER GROVE HEIGHTS
		STATE:			MN
		ZIP:			55077

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	US BioEnergy Corp
		DATE OF NAME CHANGE:	20050707

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHS INC
		CENTRAL INDEX KEY:			0000823277
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-FARM PRODUCT RAW MATERIALS [5150]
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			0831

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33203
		FILM NUMBER:		061284484

	BUSINESS ADDRESS:	
		STREET 1:		5500 CENEX DRIVE
		CITY:			INVER GROVE HEIGHTS
		STATE:			MN
		ZIP:			55077
		BUSINESS PHONE:		651-355-6000

	MAIL ADDRESS:	
		STREET 1:		5500 CENEX DRIVE
		CITY:			INVER GROVE HEIGHTS
		STATE:			MN
		ZIP:			55077

	FORMER NAME:	
		FORMER CONFORMED NAME:	CENEX HARVEST STATES COOPERATIVES
		DATE OF NAME CHANGE:	19980611

	FORMER NAME:	
		FORMER CONFORMED NAME:	HARVEST STATES COOPERATIVES
		DATE OF NAME CHANGE:	19961212
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>doc3a.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2006-12-14</periodOfReport>

    <dateOfOriginalSubmission>2006-12-14</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001332341</issuerCik>
        <issuerName>US BioEnergy CORP</issuerName>
        <issuerTradingSymbol>USBE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000823277</rptOwnerCik>
            <rptOwnerName>CHS INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5500 CENEX DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>INVER GROVE HEIGHTS</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55077</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isTenPercentOwner>1</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Class A</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14380000</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Common Class A stock is now known as Common Stock.</footnote>
        <footnote id="F2">Following a reverse stock split that occurred concurrently with the Initial Public Offering, CHS Inc.'s number of owned shares was reduced from 57,500,000 to 14,380,000 shares.  Number of shares reported on Form 3 filed 12/14/2006 should have been the post-reverse split total of 14,380,000 shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>David A. Kastelic</signatureName>
        <signatureDate>2006-12-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
