If the erection is not hard, it is just an occasional phenomenon and does not need to be worried. By regulating personal habits, adjusting the frequency of sexual life and adjusting the mentality, you can usually recover. If the erection is not hard and cannot complete the sexual life for more than 3 months, it can be diagnosed as erectile dysfunction, then it is necessary to do the appropriate tests, including sex hormones, nocturnal erection test, penile blood flow color Doppler ultrasound, etc., for assessing whether it is psychological or organic factors. Treatment is mainly based on oral medications as the first line of treatment, including sildenafil, vardenafil, tadalafil, and Chinese herbal medicines. If sex hormone testing shows low testosterone levels in men, androgen supplementation is required. Other treatments include vacuum negative pressure suction, low energy shock waves, and surgery, which are used relatively infrequently. Risk factors that contribute to erectile dysfunction, such as smoking, alcohol consumption, and staying up late, need to be eliminated as much as possible in life.