This article is to explore the clinical significance of detecting post-operation serum alpha-fetoprotein(AFP) in patients with primary liver cancer (PLC). The correlation between elevation of post-operation AFP and remnant, recurrence and metastasis of tumor in PLC patients was studied in 70 patients between Feb. 1996 and Mar. 2002. The elevation of post-operation serum AFP was found under the following 4 conditions : remnant or early metastasis, recurrence or metastasis, relapse of PLC and late hepatocirrh...