Every normal male will have four to five erections of his own during the night while he sleeps, and the duration is usually 30 to 50 minutes, which is a natural physiological reaction of a person in the sleep state. A morning erection is an erection observed by men when they wake up in the morning, and is named as such because it usually occurs between 4 and 7 a.m. It is actually a continuation of a nighttime erection. The morning erection is a normal physiological response for men, but many men lack knowledge of this aspect of life, and occasionally find that the morning erection suddenly disappears and then reappears, worrying about whether they have erectile dysfunction and have “impotence”. So, is the disappearance of a man’s morning erection impotence? In fact, the nocturnal erection of the penis in this unconscious state is not necessarily a daily occurrence, the disappearance or reduction may have some influencing factors: poor sleep: sleep time is sufficient or not, sleep quality is good or bad, will affect the rhythm and level of androgen secretion to varying degrees, thus affecting the morning erection; fatigue: work pressure, excessive fatigue, will Mental and physical exhaustion can also affect morning erections; Bad habits: excessive smoking, alcoholism, irregular diet and rest time will also affect the occurrence of morning erections; Emotions: anxiety, depression, excessive grief and anger can not only affect the cortical activity of the brain, but also affect the endocrine and cardiovascular system of the body, which can significantly reduce morning erections; Age: under normal circumstances, age plays a determining factor in morning erections. After sexual maturity, with the growth of puberty age, the number of morning erections gradually frequent and the duration gradually grows. after 30 years old, with the growth of age, the morning erection will gradually weaken or decline. after 60 years old, the number of morning erections of older men will drop sharply or disappear; drugs: anti-tumor drugs, anti-hypertensive drugs, hypoglycemic drugs, antacid drugs, sedative drugs, etc. can make the morning erection lower; diseases: many Diseases can affect morning erections, such as hypertension, cardiovascular disease, diabetes, lumbar disc herniation, etc. Therefore, when the morning erection occasionally decreases or disappears, you cannot directly identify yourself as impotent, and if this produces anxiety instead, it will aggravate the phenomenon of reduced morning erection. As a matter of fact, many men have reduced morning erections only once in a while, and there are no problems with their sex life in general, and even some elderly people can still have a satisfactory sex life despite not having morning erections. Of course, if the disappearance of morning erection lasts for more than half a year, or if there is difficulty in getting an erection during daily sex, poor erection hardness or decreased sexual satisfaction, it needs to be taken seriously. Especially if you fail to find factors related to psychological stress, fatigue and lack of sleep, you should be sufficiently alert. Once the organic cause is found to exist, you should rush to the male department of a regular tertiary hospital in order to nip the disease in the bud.