This paper selects LLC method and Fisher-ADF method to test panel data before regression analysis stationary of the sequence to avoid the occurrence of pseudo-regression results. Test results show that the original sequence has a unit root. After the first order difference sequence is tested again, the test results are stable, and the first order single integer can be used for regression analysis. Meanwhile, Pedroni test and Kao test are used to test the panel cointegration test results from Table 5-2 Give 5.