Contraceptive gel is reliable when used regularly, but is not a highly effective contraceptive and is prone to contraceptive failure. Contraceptive gel requires the patient to put the drug into the vagina within five minutes before intercourse, so that it can fully dissolve and work, and the time to work is only half an hour, if the time of intercourse is more than half an hour, the chance of contraceptive failure will be very high. After the use of contraceptive gel, patients should not douche the vagina within six hours, if douche the vagina will reduce the effectiveness of contraception and lead to contraceptive failure, the use of contraceptive gel is subject to a number of conditions, the failure rate in the clinic is very high. Patients can choose to use effective contraceptive methods, such as taking a combination of short-acting contraceptive pills, the use of condoms or intrauterine placement of birth control rings.