Early signs of leukemia in the elderly vary according to the disease. In the early stage of chronic leukemia, the main signs are high metabolism such as night sweats, etc. In the early stage of acute leukemia, the main signs are bleeding and fever. 1. In the case of chronic leukemia, early signs in elderly patients mainly include fatigue, night sweats (sweating abnormally after going to sleep, but sweating stops after waking up), fever, and weight loss, and other hypermetabolic manifestations. 2. If it is acute leukemia, elderly patients in the early stage mainly show bleeding of skin and mucous membrane, such as bleeding spots, purpura and petechiae; they have fever themselves, and may also have fever due to infection; anemia is more serious, such as fatigue, panic, chest tightness and so on. If there is any discomfort, it is recommended to go to the hospital in time, specific diagnosis and treatment under the guidance of physicians.