Objective  To evaluate the benefit of periodic screening mode in high-risk population of primary hepatic carcinoma.Method  First,using of the screening data of high-risk live cancerous population,the variables of screening history were transformed into synthetic indexes which were independent each other when using principal component methods in factor analysis model;Then,the effect of synthetic indexes and liver function index on survival time was analysised with Logistic model.Result  All of the three synthetic indexes entered the Logistic regression model.Conclusion  The screening mode can find cases ahead of the clinic.If these cases have received treatment timely,it is hopeful to prolong their survival time.