The differences between solid tumors and non-solid tumors are: a. Tumor morphology is different. Solid tumors all form masses, which can be seen by the naked eye or imaging methods such as CT and MRI. Non-solid tumors are mainly tumors of hematopoietic system, and their tumor cells mainly exist in blood circulation, which are not visible to the naked eye or imaging examination. The growth rate of solid tumors is slower than that of non-solid tumors. The staging method of solid tumors is different. The staging of solid tumors is based on the extent of tumor spread, and the international TNM staging system is used at present. Non-solid tumors are not suitable for staging by TNM system, and they are not staged, but only look at the proportion of tumor cells in the blood. Fourth, the treatment methods are different. Solid tumors can be treated by surgery, radiotherapy, chemotherapy, as well as immunotherapy and targeted therapy, while non-solid tumors are mainly treated by chemotherapy, and surgical treatment has almost no status.