The chances of pregnancy will be increased with the injection, but it is hard to say how much the chances of success are, it also depends on the activity and quality of sperm, the smoothness of the fallopian tubes and the development of the uterine lining. Ovulation promotion injection is mainly used for infertility patients caused by ovulation disorder, its composition is HCG. ultrasound monitoring follicle maturity, give HCG 5000-10000IU to promote follicle ovulation, will increase the chances of pregnancy, but the success rate of ovulation promotion injection is also uncertain, it is difficult to determine how much the chances of success. Whether or not the injection is successful also depends on the activity and quality of the male, as well as whether the fallopian tubes are open and whether or not a fertilized egg is successfully formed with the egg. The formation of a fertilized egg depends on whether the uterine lining has developed to a stage where it is ready for implantation. If all of these processes are normal, the chances of getting pregnant after ovulation are relatively high. Women who have difficulty in conceiving and need to take ovulation injections are advised to take targeted treatment under the guidance of a doctor to avoid excessive anxiety.