Ligation and IUD are two different contraceptive methods. Women can choose the appropriate contraceptive method according to their actual situation, and there is no such thing as better. 1. Female ligation generally refers to tubal ligation, which is a safe and permanent birth control measure. (1) The indications for tubal ligation are those who request sterilization without contraindications; those who suffer from serious systemic diseases that make it difficult to have children. (2) Contraindications include having a body temperature of 37.5℃ or above twice in 24 hours; poor general condition, such as heart failure, blood disease, etc., which makes the patient incapable of undergoing the surgery; suffering from severe neurosis; acute stage of various diseases; having an infected foci on the abdominal skin or suffering from acute or chronic pelvic inflammation. 2. Female IUD refers to the use of intrauterine device to achieve the purpose of contraception, is a safe, effective, simple, economical and reversible contraceptive method. (1) The indications are that all women in their reproductive years have no contraindications and require the placement of an intrauterine device. (2) Contraindications are pregnancy or suspected pregnancy; acute inflammation of the reproductive tract; tumors of the reproductive tract; malformations of the reproductive tract; loose endocervical orifice, severe old cervical laceration or uterine prolapse; serious systemic diseases; uterine cavity <5.5cm or >9.0cm; menstrual disorders and irregular vaginal bleeding in the past three months; history of copper allergy; poor uterine contraction with hemorrhage or potential infections after termination of pregnancy by various means. Possibilities.