Embryo transfer is the last and crucial step in IVF. In clinical practice, we found that endometrial morphology is more important than thickness for embryo implantation. Two typical cases are presented as follows: 1 Ms. Wen, during the frozen embryo transfer, the endometrial thickness was found to be standard by ultrasound, but the morphology was always in enhanced echogenicity. After a failed transfer, hysteroscopy was given and a large amount of hyperplasia was found. The following month after scraping, the endometrial morphology was still poor and in enhanced echogenicity. Ms. Wen and her husband were very patient and complied well with the treatment. They followed my advice and performed another scraping, which still produced a large amount of mucus-like endometrial tissue, and the next month they came back to the clinic and the morphology was still poor. The following month, she had hormone replacement to prepare the endometrium, and ultrasonography revealed that the endometrium finally reached 1.0 cm. The embryo was transferred and the pregnancy was successful with a singleton pregnancy. 2. Ms. Zhao, 3 transfers, one biochemical, 2 failures, still 2 embryos remaining. Ultrasonography revealed poor endometrial morphology and uneven echogenicity of the myometrium, and she was given descending regulation in preparation for frozen embryo transfer. The following month, hormone replacement was given to prepare the endometrium, which was found to be 1.0 cm thick, but the morphology showed enhanced echogenicity with multiple small fluid areas during the visit. The hormone level had reached a level that could be used for transfer. After seeking Ms. Zhao’s consent and understanding, a curettage was performed and a large amount of blood clot-like endometrial tissue was scraped out, and hormone replacement preparation for endometrium was given again. 2 weeks later, the endometrium reached 1.0 cm on follow-up ultrasound examination and A-. embryo was transferred and a singleton pregnancy was obtained. The above successful cases suggest that in the clinical treatment process, individualized treatment is needed for the patient’s condition and not to stick to the conventional treatment protocols (e.g. descending regulation protocol, hormone replacement preparation of the endometrium is not recommended to scrape again) in order to obtain good treatment results.