Testosterone level plays an important role in maintaining immunity and male sexual function. Reasons for low testosterone level include obesity, inflammation, varicocele and primary secretion reduction, etc. The treatment program mainly includes weight loss, anti-infection treatment, surgical treatment and artificial supplementation. 1. Obesity: obesity will lead to endocrine function abnormality, which will lead to the decrease of androgen secretion in the body, and it is necessary to pay attention to strengthening exercise and controlling diet, which will be improved after the weight is controlled. 2. Inflammation: testicular inflammation will affect the secretion of testosterone, through the application of anti-inflammatory drugs can be relieved, clinically commonly used drugs are levofloxacin, amoxicillin, cefixime and so on. 3. Varicocele: Varicocele will affect the testicular function and cause the testosterone level to drop, generally can be treated by surgery. 4. Primary reduction of secretion: the occurrence of adrenal gland as well as testicular injury itself will affect the secretion of testosterone, a large part of which is irreversible and can be improved by artificial supplementation of testosterone undecanoate. The above medications should be used under medical supervision. Decreased testosterone levels can also be caused by other factors and require different treatments. If the condition has not been relieved, it is necessary to consult a doctor in time to diagnose the specific physical condition through clinical examination, and carry out standardized treatment under the guidance of the clinician, so as to avoid causing delays in the condition.