32 cases of double primary cancer had been treated in our hospital from January, 1984 to March, 1994. Among them, 21 cases in male and 11 cases in female, the ratio of male and female is 1.9:1, the age ranged from 37 to 84 years old, the median age was 60 years old. 8 of them were synchronous carcinoma and 23 were metachronous carcinoma, the period from first to second cancer ranged 8 months to 8 years and 3 months. 26 of the 32 patients were performed radical resection and radiotherapy and/or chemotherapy treatment. The postoperative survival rate of 1, 3 and 5 year's were 100.0%, 65.3% and 42.3% respectively. 2 patients survived over 10 years with no tumor. The other 6 patients were later stage when fund the second primary cancer, palliative operations were only performed for them and they survived ranging from 5 to 15 months.