The process of doing the water passage is like this, if you already have an appointment for a minor surgery, the doctor will first lay out the sheet, disinfect and sterilize the vulva and vagina, after disinfecting, the water passage tube is usually put into the uterine cavity, and then the water passage liquid, which is usually about 30 ml, is slowly injected into the uterine cavity, and then you can judge whether the process is going well or not according to the feeling, if you feel particularly painful and the doctor feels that there is particularly high resistance, you may have to terminate the surgery at any time. In addition, if you feel that the whole process is smooth, without any pain, and the doctor feels that it is particularly smooth without any resistance, it means that the fallopian tube is relatively open. After the procedure, the doctor will disinfect the vulva and vagina again, and then explain the precautions and you can go home.