The Application of Zishen Yutai Pill in Aged Women Undergoing IVF-ET

Inclusion Criteria: * infertile women aged ≥35 and ≤42 years; * intend to undergo IVF/ICSI-ET (GnRH-a long protocol or GnRH-ant protocol); * BMI\<28kg/m2; * bilateral ovaries exist; * patients who voluntarily signed the informed consent and agreed to be followed up as required by the study protocol. Exclusion Criteria: * repeated implantation failure (previous three times or more IVF/ICSI-ET failure); * adenomyosis, uterine line constricted by uterine fibroid; * untreated bilateral hydrosalpinx; * endometrial diseases that have not been cured ; * known diseases that are not suitable for undergoing assisted reproductive technology or at the present not suitable for pregnancy; * patients who have taken traditional Chinese medicine or Chinese patent medicine for infertility treatment in the last month(30 days). Exit Criteria: * subjects who have adverse events cannot be tolerated; * severe breach of the protocol; * for subjects who exit due to personal or unpredictable reasons, please describe specific details; * subjects considered inappropriate to continue to participate in the study for other medical reasons.