-----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,
 CCYWNtwBASJ3J9H98I9JWc4P+MwvFXJO5ReAwq8YI5PtmBDsfclaUALudbuSjgFg
 4TXnWL8mtIKbSGYEDVobNw==

<SEC-DOCUMENT>0001304953-05-000004.txt : 20050517
<SEC-HEADER>0001304953-05-000004.hdr.sgml : 20050517
<ACCEPTANCE-DATETIME>20050517102250
ACCESSION NUMBER:		0001304953-05-000004
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050512
FILED AS OF DATE:		20050517
DATE AS OF CHANGE:		20050517

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Beck W Douglas
		CENTRAL INDEX KEY:			0001304953

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-08765
		FILM NUMBER:		05837355

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212-882-5575

	MAIL ADDRESS:	
		STREET 1:		51 W. 52ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MANAGED HIGH YIELD PLUS FUND INC
		CENTRAL INDEX KEY:			0001060392
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			0531

	BUSINESS ADDRESS:	
		STREET 1:		C/O UBS GLOBAL ASSET MANAGEMENT (US) INC
		STREET 2:		51 WEST 52ND ST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		212 882 5575

	MAIL ADDRESS:	
		STREET 1:		51 WEST 52ND ST
		STREET 2:		C/O UBS GLOBAL ASSET MANAGEMENT (US) INC
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
</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>2005-05-12</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001060392</issuerCik>
        <issuerName>MANAGED HIGH YIELD PLUS FUND INC</issuerName>
        <issuerTradingSymbol>HYF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001304953</rptOwnerCik>
            <rptOwnerName>Beck W Douglas</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>51 W. 52ND STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/ W. Douglas Beck</signatureName>
        <signatureDate>2005-05-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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