Patients with recurrent miscarriage and infertility often ask whether I am a candidate for tubal inspection or hysteroscopy, and which of these two tests is better. Now let’s take a look at the advantages and disadvantages of these two types of tests. Fallopian tube intervention (SSG+FTR): 1. The procedure is completed under DSA fluoroscopy, and the distance and situation of the guidewire entering the fallopian tube is observed throughout the procedure to avoid perforation caused by blindness; Zhang Guofu, Imaging Department, Shanghai Hong House Hospital 2. Fluoroscopic imaging to understand the morphology of the fallopian tube, the presence of nodular tubitis, and the presence of fluid at the umbrella end; 3. Dynamic understanding of the opening of the umbrella end of the fallopian tube and the diffusion of contrast agent in the pelvis SSG can further clarify the causes of poor tubal visualization during HSG (tubal spasm, high tension or obstruction); 6, mild membranous adhesions at the umbilical end of the fallopian tube can be witnessed to open under fluoroscopy; 7, blindness during guidewire recanalization, and tubal perforation can be difficult to detect, resulting in the drug entering the pelvic cavity directly through the perforation. The fallopian tube is mistakenly believed to be patent. Hysteroscopic lavage: 1. can only see the inner opening of the fallopian tube and judge the degree of tubal patency according to the resistance of pushing the drug and the presence or absence of reflux, which is subjective; 2. cannot understand the opening of the umbilical end of the fallopian tube dynamically; 3. cannot observe whether there are adhesions in the pelvic cavity; 4. cannot observe whether there is nodular tubal inflammation; 5. if the tubal fluid is obvious, pushing the drug without reflux and entering the bag of fluid will cause the illusion of tubal patency; 6. 6. Hysteroscopy can clearly detect endometrial polyps and the presence of adhesions and can be used for microscopic surgery to remove the polyps and decompose the adhesions for pathological analysis.