The accurate identification of poverty is the premise of real fast poverty alleviation, On the basis of absorbing the previous researches, the improved A-F model was used to perform the multidimensional poverty measure to accurately identify the poor individuals. A multidimensional poverty measurement index system covering 15 indicators in five dimensions, including health, education, living conditions, employment and income, has been established. The A city was taken as an example to make an empirical analysis. It is found that the incidence of poverty in the dimensions of employment, income and education is high, and employment is the direct reason that restricts the impoverished individuals in A city to get rid of poverty. Lower incomes reduce the likelihood of rising out of poverty and increase the likelihood of falling deeper into it; The lower education level of the head of the household has affected the family's poverty.