The absence of the spleen does not have a great impact on people, but some patients are afraid of the body’s low immune function and the elevation of platelets. 1. Spleen is the largest immune organ of human body, human body without spleen needs to pay attention to the body’s low immune function, which will cause the body’s cellular immunity and humoral immunity dysfunction, the body will increase the susceptibility to serious infections, and it is easy to cause acute outbreaks of infections, sepsis, meningitis and so on. 2. Spleen mainly has the functions of hematopoiesis, blood storage and blood filtration, once there is no spleen, these functions will disappear. If the body is in severe ischemia or certain pathological conditions, it cannot increase blood volume in time, the blood will not be able to flow through the spleen, and the aging and abnormal platelets cannot be removed from the body, so the platelets will rise, and when the platelets are elevated to a certain degree, it will be easy to cause thrombus formation. People without spleen are recommended to do appropriate exercise in general, and eat a reasonable diet, so that the body to replenish enough nutrients, you can enhance immunity, but also to reduce the occurrence of complications.