Congenital left-sided curvature of the male penis, if it is a slight curvature that is, when the angle of curvature is less than 30 °, it is a normal phenomenon, if it is due to penile injury caused by penile curvature, it should be treated accordingly. 1. Congenital penile curvature: Type IV penile curvature is mostly seen in the left side of the bend, the angle is smooth, the bend is generally in puberty or after puberty aggravation. If it is a slight curvature generally does not affect sexual intercourse may not need treatment, is a normal phenomenon; if the curvature is greater than 30 ° can be surgical treatment, such as simple penile skin off the sleeve, fibrous stripe excision, urethral laxity, penile leucoplasty, etc.. 2. Acquired penile curvature: are caused by penile injury, mostly seen in Peyronie’s disease, but also may be sexual intercourse injury, repeated urethral operation, pelvic root canal indwelling catheter, masturbation injury, and other causes of spongy erection asymmetry, penile curvature of the penis, the surgical method is the same as congenital penile curvature. Whether the left side of the male penis is normal or not depends on the individual specifics, it is recommended to go to the regular hospital in time to find out the condition, reasonable treatment.