目的在于指导合理清除淋巴结。方法应用近２０年胃癌根治切除病例。研究其淋巴结转移率、计量、分型、分级、以及分子水平研究。结果淋巴结转移在４枚以下、Ｎ１、Ｎ２者，扩大淋巴结清除术、可获良效。每级５年生存率相差２０％上下。大结节融合型转移轻，小结节孤立型转移严重。ＤＮＡ、肿瘤标志物，Ｅ－ＣＤ显示了预测转移程度的潜能。结论胃癌转移分型、计量、分级研究与分子水平研究，有助于正确指导合理淋巴结清除术。 The purpose is to guide the rational removal of lymph nodes. Methods A case of radical resection of gastric cancer was applied in the past 20 years. Study the lymph node metastasis rate, measurement, classification, classification, and molecular level research. Results Lymph node metastasis was less than 4 and N1 and N2 were enlarged. Lymph node dissection was performed and good results were obtained. The 5-year survival rate of each level is about 20% lower. Large nodular fusion metastases were light, and solitary nodules were severely metastatic. DNA, tumor markers, and E-CD showed the potential to predict the degree of metastasis. Conclusions The study of gastric cancer metastasis classification, measurement, grading and molecular studies can help to guide reasonable lymphadenectomy.