How to add field history as a related list of opportunity in vf page?

Hi Tanu,

You can add related list in your VF Page by using apex:detail tag.

<apex:page standardController="Opportunity">
<apex:detail subject="{!Opportunity.Id}" relatedList="false" title="false"/>
</apex:page>

OR

You can use apex:relatedList tag. For example:

<apex:page standardController="opportunity">
<apex:relatedlist list="OpportunityHistories" title="Stage History"/>
<apex:pageBlock >
<apex:pageblocktable value="{!opportunity.Histories}" var="hist" title="opporty">
<apex:column value="{!hist.createddate}"/>
</apex:pageblocktable>
</apex:pageBlock>
</apex:page>

Hope this helps you.