The male penis is not hard enough to belong to the mild erectile dysfunction, may be age factors, excessive intercourse, mental psychological factors, disease factors, drug factors and so on. 1. Age factor: the elderly on the age of penis hardness will have different degrees of decline, this situation is generally normal. 2. Excessive sexual intercourse: too much sex will lead to penile weakness, manifested in the penis is not hard enough, this situation by reducing the number of sexual intercourse may be better. 3. Mental and psychological factors: husband and wife relationship is not harmonious, psychological pressure, anxiety and tension may lead to decreased penile hardness. 4. Disease factors: pituitary tumors, orchitis, prostatitis, penile trauma, genitourinary tumors and so on may affect the sexual function, resulting in the penis is not hard enough. Other systemic diseases such as diabetes, abnormal lipid metabolism, hypertension, hypothyroidism, etc. can also lead to decreased penile hardness. 5. Drug factors: some anti-hypertensive drugs, antidepressants, anti-androgen drugs, antipsychotics, etc. may lead to varying degrees of impotence, manifested in the penis is not hard enough. Male penis is not hard enough, if accompanied by other symptoms need to consult a doctor in time, do not blindly take medication to avoid improper use of drugs and aggravate the condition.