If it is a temporary erection of the penis, it will not affect the quality of sleep of men and they will not have trouble sleeping. If the erection is persistent, it will affect the normal sleep and lead to sleeplessness. Temporary erection has little effect, mostly due to sexual stimulation of the penis and sexual fantasy, and will not affect normal sleep. As long as attention is paid to avoid sexual stimulation and sexual fantasy, the erection will gradually subside. If the penis is in an erect state for a long time, it is an abnormal erection, mostly due to pathological factors, which will not only affect the patient’s normal sleep, inducing insomnia, sleeplessness, and even other serious complications, such as penile necrosis, which need to be treated in a timely manner and can be relieved by applying local ice. For more serious cases, it is necessary to promptly go to the hospital for surgical bloodletting treatment.