This paper studied the employees' wage and benefit difference among state-owned company,private company,foreign company and also company invested by Hongkong,macao or Taiwai take advantage of the economic census data made in 2004,and we try to find out the reasons which cause the difference.Statistic results shows that:employees from private company have the lowest wage and benefit;employees of state-owned company enjoy lower wage but the benefit is quite well;employees in company invested by Hongkong,Macao or Taiwai get quite higher wage but their benefit only higher than that of private company;employees from foreign company obtain the best wage and benefit level.This study analysis the reasons with the method of multiple linear regression by stata,and finds that companies of different ownership are different among sector and area distribution,firm age,scale,female proportion,union,productivity,concentration of fixed assets,technology content,education level and work experience,those are all affect the wage and benefit.What's more,the reason for the difference between private company and state-owned company is not the same to that between private company and the non-owned companies.