Shortness of breath and weakness may be related to overwork, coronary heart disease and anemia, which can be treated by general therapy and medication. 1. Excessive exertion: if in strenuous exercise, prolonged heavy physical work may cause symptoms of fatigue shortness of breath weak legs, generally after sufficient rest symptoms can be relieved on their own, but also through massage, hot compresses and other relief symptoms. 2. Coronary heart disease: If coronary heart disease caused by insufficient blood supply, and cause patients to lack of energy shortness of breath weak legs and other symptoms, pay attention to life to avoid strenuous activities, appropriate rest, can follow the doctor’s instructions orally isosorbide nitrate tablets, aspirin enteric-coated tablets, metoprolol tablets and other medications for treatment. 3. Anemia: If the anemia is caused by malnutrition, it will be weak and short of breath and weak legs and other symptoms, you can eat some food through dietary therapy to replenish blood, such as spinach, lean meat, animal liver, etc., or through the doctor’s prescription of oral iron supplementation drugs, such as ferrous sulfate, ferrous fumarate, etc.. It is recommended to go to the hospital in time, under the guidance of the doctor through the auxiliary examination, according to the condition of targeted treatment, so as not to delay the condition.