Abstract: in recent years, because of the dual effects of contraception and the prevention of sexually transmitted diseases, especially the widespread use of condoms, condoms have become more common. It should be said that condoms is a convenient, worthy of promotion of male contraceptive tools. According to statistics, if the correct use of condoms, failure rate of only 1.5 ~ 4.2%. But in the actual use of condoms, the failure rate as high as 10 ~ 15%. The reason is mainly people failed in the use of condoms in the process of attention to some of the details, cause contraceptive failure. In recent years, condoms have been widely used because of their dual effects of contraception and prevention of sexually transmitted diseases, especially aids. It should be said that condoms is a convenient, worthy of promotion of male contraceptive tools. According to statistics, if the correct use of condoms, failure rate of only 1.5 ~ 4.2%. But in the actual use of condoms, the failure rate as high as 10 ~ 15%. The reason is mainly people failed in the use of condoms in the process of attention to some of the details, cause contraceptive failure. The male condom use, condom from 1 detailed methods of packaging carefully so as not to tear apart the edge of condom; avoid sharp scissors type, ensure that condoms do not break down. 2, with condoms, pre produced secretions may contain semen and lead to sexually transmitted diseases, can cause the spread of pregnancy and sexually transmitted diseases. The residual air in the 3, the condom can lead to condom rupture, to avoid the likelihood of rupture, the extrusion end of the condom pouch air gently with the thumb and index finger, and then will be on the condom. 4, determine the end of the condom curly part exposed outside. In front of the condom to squeeze the same time, with the other hand to gently extend the condom cover. 5, if part of the condom slippage, immediately put it back in situ. 6, each condom can only be used once. Use a condom wrapped in tissue paper and put into the dustbin. How to choose the suitable condoms on the market many types of condoms, thin, thread, flavor…… There are also marked on the packaging, which makes me very confused in the selection. Sometimes from the supermarket to buy home condoms, although expensive, not comfortable to use. I would like to ask, in the face of all kinds of condoms, how to choose? Men often complain about wearing condoms uncomfortable, in fact, the main reason is that there is no right choice. In the model, China market condoms have large, mistress, models, general common medium. Men can use a thin wire around the penis after the erection of a full circle, and then measure the length of the line, that is, the circumference of the penis, and then divided by 3.14, it is the diameter of the penis. According to the results of this calculation, you can go to buy the right size condoms. In the thick, condoms are thin, thin and ordinary three, thickness of 0.01 millimeters per drop, male comfort will rise 20%. However, for those who are faster, older men, or should use a thick condom, is conducive to control * * *, to extend the sex life. In the aspect of texture, thread, floating point and so on to help enhance the stimulation of women, women can choose to purchase according to demand. Some have the flavor and color of the condom, is helpful to increase the fun, but also prone to allergies with additives, should pay attention to the physical feelings. If itching, edema and other issues, to be promptly deactivated. In addition, the condom also has a shelf life, the purchase should be clear, expired on the aging can not be used. How to deal with condom rupture? Sex, due to the intensity of the action is too large, suddenly found a broken condom, I would like to ask how to deal with this time? The use of too small, expired or excessive use of condoms sexual intercourse, are prone to rupture. The flow of semen into the vagina after a condom rupture may result in pregnancy. Therefore, if the condom was found when sexual intercourse, should take other measures to contraception. First of all, should immediately stop sexual life, the woman was squatting posture, so you can make the most of the semen outflow from the vagina, and then choose a topical contraceptive (such as topical contraceptive film, topical contraceptive tablets) into the vagina, kill the residual of sperm in the vagina. However, before taking these measures, may have been part of the sperm into the uterine cavity, so there is still the possibility of pregnancy, so the best remedy is to take anti pregnancy drugs. The use of condoms contraception couples, it is best to have 1 – 2 kinds of anti pregnancy drugs, in order to prevent the rupture of the condom after the helpless, resulting in mental stress. To prevent the occurrence of such problems, we must learn to use condoms correctly, to avoid the use of too late or premature picking, the proper use of lubricants, the correct storage of condoms, etc..