Abstract: Objective:To investigate the value of high-pressure syringe constant speed automatic injection in hysterosalpingography(HSG).Methods:200 cases with infertility,were ivied into two groups including experimental group(n = 100) and control groups(n = 100) according to different injection methods of hysterosalpingography.The experimental group was underwent high-pressure syringe constant speed automatic injection,while the control group underwent traditional manual injection.Results:96 of 100(96%) in the experimental group can be observated dynamically the contrast agent flow into the uterus and the fallopian tube,and be made correct diagnosis.Only 6 of 100(6%) in the control group can be made correct diagnosis of unilateral or bilateral fallopian tubes obstruction.Other 96 cases in the control group cannot be observated dynamically the contrast agent flow into the uterus and the fallopian tube and cannot be made correct diagnosis.In the experimental group,medical personnel can be free from the radiation damage,while the medical personnel are unavoidable damage from the radiation damage.Conclusions:With the application of high pressure injector constant speed automatic injection,hysterosalpingography and injection therapy can be safer,more convenient,more effective state.It can improve the gynecological clinic level in this field and is suitable for clinical widespread application(especially in primary hospitals).