Bedwetting in junior high school students may occur due to excessive water consumption before going to bed, excessive water in the body, and excessive urine production in the bladder, resulting in excessive pressure in the bladder. The symptoms of bedwetting can occur due to the individual’s physique, as some people grow and develop late, and there exist various body functions that are still incomplete. When a child has a psychological shadow inside due to bedwetting as a child, it can also lead to bedwetting. Due to the deep relaxation of the muscles of the whole body when the human body is overly tired, the contraction of the urethral sphincter is weak, which in turn leads to the appearance of bedwetting. If the body is damaged by external forces, the nerves that govern the body to urinate become abnormal, which leads to bedwetting. It is recommended that patients go to the urology department of a regular hospital in a timely manner, improve the relevant examination, and treat the cause after a clear diagnosis.