Hi Dai,

May I request you please elaborate your requirement so that we can understand better and can help you accordingly.

What is that you are trying to achieve and what exactly is the problem you are facing.

Assuming that you want to input the data using input field and want to save the new record information to the database.

If that's the use case then below piece of code works fine.

<apex:page standardController="contact" >
   
      
    <apex:form >
        <apex:commandButton action="{!save}" value="save"/>
                    <tr><td>Sex:</td><td><apex:inputfield label="" value="{!contact.Salutation}" /></td></tr>
                <tr><td>First Name:</td><td><apex:inputfield label="" value="{!contact.FirstName}" /></td></tr>
                <tr><td>Last Name:*</td><td><apex:inputfield label="" value="{!contact.LastName}" /></td></tr>
                <tr><td>Email:*</td><td><apex:inputfield label="" value="{!contact.Email}" /></td></tr>          
                <tr><td>Phone:</td><td><apex:inputfield label="" value="{!contact.Phone}" /></td></tr>
                <tr><td>Street:</td><td><apex:inputfield label="" value="{!contact.MailingStreet}" /></td></tr>
                <tr><td>City:</td><td><apex:inputfield label="" value="{!contact.MailingCity}" /></td></tr>
                <tr><td>State:</td><td><apex:inputfield label="" value="{!contact.MailingState}" /></td></tr>
                <tr><td>Country:</td><td><apex:inputfield label="" value="{!contact.MailingCountry}" /></td></tr>
                <tr><td>PostalCode:</td><td><apex:inputfield label="" value="{!contact.MailingPostalCode}" />                </td></tr>
    </apex:form>
  
</apex:page>

Please let us know if you are looking for something else.

Happy to help further.

Thanks,
Nagendra

I want display information of Contact of a Account and allow user edit.
Ex: <apex:inputfield value="{!contact.FirstName}" />
But result display on website is a Label (not textbox) , So user can't input a new FirstName  if user want edit.