The glans is generally soft enough to be inserted into the vagina. The glans itself is soft, but when it is erect, the corpus cavernosum of the penis becomes hard when it is filled with blood, while the corpus cavernosum of the glans does not become hard like the penis when it is erect, but only slightly hard. In general, as long as the penis is hard enough and the glans is slightly soft, it is possible to enter the vagina and will not affect the sexual life. But if the glans is very soft, it is likely to be a problem of congestive dysfunction. In this case, it is recommended to go to the hospital for the appropriate examination, and at the same time, you should also pay attention to avoid alcohol and spicy diet, exercise to enhance physical fitness, avoid masturbation, sedentary, staying up late, holding urine, straining, etc.