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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 BU687l8GVHXrIzjSTB44/GT0Zr6bWE1gNByJmP/wfIXuICNJzbaZh9hA8oGKjh5X
 7sBB2Br//uORpWMU+O1YiQ==

<SEC-DOCUMENT>0001383954-07-000026.txt : 20070702
<SEC-HEADER>0001383954-07-000026.hdr.sgml : 20070702
<ACCEPTANCE-DATETIME>20070702120834
ACCESSION NUMBER:		0001383954-07-000026
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070629
FILED AS OF DATE:		20070702
DATE AS OF CHANGE:		20070702

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS INTERMEDIATE HIGH INCOME FUND
		CENTRAL INDEX KEY:			0000833021
		IRS NUMBER:				046593681
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1130

	BUSINESS ADDRESS:	
		STREET 1:		500 BOYLSTON ST
		STREET 2:		20TH FL LEGAL DEPT.
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		6179545000

	MAIL ADDRESS:	
		STREET 1:		500 BOYLSTON ST
		STREET 2:		20TH FL LEGAL DEPT.
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLONIAL INTERMEDIATE HIGH INCOME FUND
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			POZEN ROBERT C
		CENTRAL INDEX KEY:			0001278408

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-05567
		FILM NUMBER:		07953720

	BUSINESS ADDRESS:	
		STREET 1:		ONE WALL STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10286
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2007-06-29</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000833021</issuerCik>
        <issuerName>MFS INTERMEDIATE HIGH INCOME FUND</issuerName>
        <issuerTradingSymbol>CIF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001278408</rptOwnerCik>
            <rptOwnerName>POZEN ROBERT C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9 ARLINGTON STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>Susan S. Newton, By Power of Attorney</signatureName>
        <signatureDate>2007-07-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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