Whether natural or manual cycle is better depends mainly on the patient’s health condition. If it is only simple tubal infertility, the ovarian function is normal and the endometrium is normal, transfer through natural cycle is the best. The reason is that when the transfer is performed under natural cycle conditions, the female hormone levels will secrete on their own with the growth and development of the embryo after the transfer, and the estrogen, progesterone and HCG levels in the female body are normal and will not affect the development of the embryo. If the patient has abnormal ovarian function or thin endometrium, she needs to choose artificial cycle to do the transfer, which can improve the chance of success. After the artificial cycle, the hormone level in the woman’s body can maintain a relatively stable state, so that the endometrium is at a normal thickness and ready for the fertilized egg to be laid.