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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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 Dk73u6KV0Y+qJ69K3Pz2Vw==

<SEC-DOCUMENT>0000945769-10-000056.txt : 20101115
<SEC-HEADER>0000945769-10-000056.hdr.sgml : 20101115
<ACCEPTANCE-DATETIME>20101115100040
ACCESSION NUMBER:		0000945769-10-000056
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101110
FILED AS OF DATE:		20101115
DATE AS OF CHANGE:		20101115

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Harvey Bryce M
		CENTRAL INDEX KEY:			0001463338

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20424
		FILM NUMBER:		101189577

	MAIL ADDRESS:	
		STREET 1:		C/O HI-TECH PHARMACAL CO., INC.
		STREET 2:		369 BAYVIEW AVENUE
		CITY:			AMITYVILLE
		STATE:			NY
		ZIP:			11701

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HI TECH PHARMACAL CO INC
		CENTRAL INDEX KEY:			0000887497
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				112638720
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			0430

	BUSINESS ADDRESS:	
		STREET 1:		369 BAYVIEW AVENUE
		CITY:			AMITYVILLE
		STATE:			NY
		ZIP:			11701
		BUSINESS PHONE:		5167898228

	MAIL ADDRESS:	
		STREET 1:		369 BAYVIEW AVE.
		CITY:			AMITYVILLE
		STATE:			NY
		ZIP:			11701
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-11-10</periodOfReport>

    <issuer>
        <issuerCik>0000887497</issuerCik>
        <issuerName>HI TECH PHARMACAL CO INC</issuerName>
        <issuerTradingSymbol>HITK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001463338</rptOwnerCik>
            <rptOwnerName>Harvey Bryce M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O HI-TECH PHARMACAL CO.,  INC.</rptOwnerStreet1>
            <rptOwnerStreet2>369 BAYVIEW AVENUE</rptOwnerStreet2>
            <rptOwnerCity>AMITYVILLE</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11701</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>22.25</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-11-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-11-10</value>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2020-11-10</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Stock Options were granted under Hi-Tech Pharmacal Co., Inc.'s 2009 Stock Option Plan.</footnote>
        <footnote id="F2">The option becomes exercisable in four equal annual installments beginning on the first anniversary of the grant date.</footnote>
        <footnote id="F3">Other than the option to acquire 5,000 shares reflected on this form as acquired by Mr. Harvey as a result of the option grant, Mr. Harvey is also the holder of additional options to acquire 11,250 shares of Hi-Tech Common Stock, (for aggregate options to acquire a a total of 16,250 shares currently held by Mr. Harvey), which options were granted on various dates, with various exercise prices, exercise dates and expiration dates.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Bryce M. Harvey</signatureName>
        <signatureDate>2010-11-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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