Platelets only 30 × 10^9 / L , that is, each milliliter of blood, contains the number of platelets 30,000, belonging to the platelet count is severely reduced. If the platelet count is only 30×10^9 / L , first of all, the patient should pay attention to bed rest, reduce activities, avoid trauma, can reduce the occurrence of bleeding. At the same time in the diet to avoid eating too hard food, also do not eat too hot food, to avoid damage to the digestive tract and cause bleeding. It is also critical to identify the specific cause of thrombocytopenia. If thrombocytopenia is caused by immune thrombocytopenia, the preferred treatment is to take glucocorticoid therapy, you can take prednisone acetate, you can also take dexamethasone, and you can combine the application of recombinant human thrombopoietin therapy. If it is aplastic anemia caused by platelets 30 × 10^9 / L , you can take cyclosporine, conilon and other drugs treatment. If the platelet count is reduced due to leukemia, chemotherapy may be needed. Platelets only 30×10^9 / L belongs to the platelet count is severely reduced, need to bed rest, at the same time to identify the cause of the disease, and then according to the cause of the disease to give the corresponding treatment.