Benign tumors and malignant tumors have certain differences in the degree of cell differentiation, growth rate, growth mode, metastatic phenomena and so on. 1. The degree of cell differentiation: benign tumors have mature cell differentiation and less nuclear division; malignant tumors have immature cell differentiation and more nuclear division. 2. growth rate: benign tumors grow slowly while malignant tumors grow faster. 3. growth mode: benign tumors grow in an expansive manner, with clearer demarcation of surrounding tissues and organs; malignant tumors grow in an infiltrative manner, with unclear demarcation of surrounding tissues and organs. 4. Metastatic phenomenon: benign tumors generally do not metastasize, while malignant tumors can not only spread to the surrounding area, but also metastasize to distant tissues and organs throughout the body. The diagnosis of benign tumors and malignant tumors should be made by professional doctors according to the pathology, and different treatment means should be adopted.