The manifestation of low platelets after chemotherapy is related to the degree of platelet reduction. If platelets are slightly reduced, patients may not have any symptoms, and if there is a significant reduction, they may show bleeding tendency such as bleeding gums and petechiae and ecchymosis of the skin. 1. With a slight decrease in platelets, patients often have no bleeding or other related symptoms, and may feel tired and weak. 2. Significantly decreased platelets, patients may have capillary hemorrhage related manifestations, such as skin petechiae and ecchymosis, gum bleeding, epistaxis and so on. 3. If platelets are severely lowered, the bleeding tendency will be further aggravated, such as gastrointestinal bleeding, urinary tract bleeding and even intracranial bleeding. And intracranial hemorrhage is often one of the causes of patient’s death. In conclusion, when the platelets decrease after chemotherapy, patients should seek medical treatment in time and seek professional doctor’s treatment to avoid serious consequences.