Progesterone injection will cause certain side effects to the body, the following side effects may occur: first, the side effects of gastrointestinal reactions, may lead to nausea, vomiting and other symptoms, some patients will also experience dizziness, fatigue and other uncomfortable symptoms; second, may cause patients to reduce the amount of menstruation, or even amenorrhea and other side effects, because a large number of long-term injection of progesterone, will Second, it may cause side effects such as reduced menstrual flow and even amenorrhea, because long-term progesterone injection will lead to atrophy of the female endometrium and cause the above reactions; third, it may cause endocrine disorders because progesterone is a kind of progestin, which will lead to imbalance of estrogen and progesterone levels in the patient’s body, thus causing endocrine disorders. As there are more side effects of progesterone injection, if the condition requires it, it should be injected under the guidance of a doctor, remember not to inject privately to avoid adverse side effects.