The wide range of infertility tests are as follows: 1. Vaginal ultrasonography: the test can be performed in non-menstrual state to understand the endometrial morphology, uterine morphology, ovarian size, ovarian morphology, and whether the fallopian tubes are fluid-filled; 2. Tubal iodine oil imaging: it is recommended that the test be performed 3-7 days after menstrual cleansing and that sexual intercourse be avoided before the test; 3. Basal hormone level monitoring: to understand the ovarian reserve function, such as estradiol, luteinizing hormone, follicle stimulating hormone, etc. It is recommended that the test be performed in the hospital on day 2-4 of the menstrual cycle.