How does the v-model of the v-input component of element bind multiple values?

<el-col :span="8" v-for = "(item,index) in addFile" :key="index">
     <el-form-item :label="item+":"" >
          <el-input v-model="__?___" size="small"></el-input>
     </el-form-item>
</el-col>

"addFileds":[
            {
                "annualAdvance":"",
                "unionDues":"",
                "socialSupplementaryInsurance":"",
                "endowmentInsurance":"",
                "unemploymentInsurance":"",
                "medicalInsurance":"",
                "basiceLifeFee":"",
                "medicalSubsidies":"",
                "welfare":"",
                "highTemperatureAlpine":"/",
                "projectAdvance":"",
                "enterpriseAnnuity":"",
                "mealSubsidies":"",
                "employmentInjuryInsurance":"",
                "maternityInsurance":"",
                "trafficSubsidy":"",
                "onlyChild":"",
                "postSalary":"",
                "performanceAdvance":"",
                "housingFund":"",
                "communication":""
            }
        ]

I want to traverse this data through v-for, and then let each input box bind a different value. How do I write it here?
what I have written in this way is the effect of the above picture, but I don"t want English to be displayed in the input box. I don"t know how to write v-model? Ask the god for advice!

<el-form ref="form" :model="form" label-width="110px">
    <el-row style="line-height:40px" :gutter="20">
         <el-col :span="8" v-for = "(item,index) in addFile" :key="index">
               <el-form-item :label="item+":"" >
                   <el-input v-model="index" size="small" ></el-input>
               </el-form-item>
        </el-col>
    </el-row>
</el-form>
Jun.18,2021

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I took a look at the iview framework, which can generate forms dynamically, which may not be supported by element, so I want to make a dynamic estimate to change the framework. If anyone else has anything that can be written, let me know

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