Testosterone undecanoate soft capsule as androgen supplementation therapy and replacement therapy, different situations with different dosing time, the time of efficacy is also different. Testosterone undecanoate is an exogenous androgen, which is a necessary hormone to maintain male growth, male secondary sexual characteristics, and to maintain testicular production of hormones and sexual function, if there is a weakening of the male performance, sexual dysfunction, you need to test endocrine, especially testosterone, if the value is low, you can apply the testosterone undecanoate soft capsule to replenish the role of the application is obvious in 2 to 4 weeks. Then according to the specific situation, decide whether to continue to apply. However, in case of secondary hypogonadism, such as after bilateral orchiectomy, anencephaly, etc., testosterone undecanoate soft capsule as a long-term androgen replacement therapy must be used for a long period of time.