Many patients in infertility clinics undergo tubal imaging to check whether the tubes are unblocked and the uterine cavity is in good condition. The steps to check tubal imaging are as follows: 1. The patient lies flat on the examination bed and the shape and size of the uterus are routinely checked; 2. The patient lies flat in the truncated position, fully exposing the area to be examined, spreading the towel and disinfecting; 3. Take a dilator and put it into the vagina, opening the vagina to better expose the cervical situation; 4. Take a three-chamber catheter and put it into the uterine cavity and inject 1-2 ml of saline, gently pulling to ensure that it has been placed 5. Prepare for the imaging procedure by first injecting the contrast agent, while observing the uterus and the imaging effect with ultrasound equipment, and recording the whole process to understand whether the uterine cavity is normal and whether the fallopian tubes are unblocked. During the examination, we should always pay attention to whether the patient has any discomfort, and if the reaction is relatively large, we need to interrupt the examination. 6. Analyze the whole imaging process and issue the final report.