Sudden bedwetting at age 30 may be related to stress, drinking too much water at night, or urinary tract disorders. Sudden bedwetting at the age of 30 may be related to mental stress and busy work. Mental stress and busy work patients, because the day did not get enough rest, if and before going to bed to drink too much water, when the night sleep into a deep sleep, can not wake up in time will appear bedwetting. Sudden bedwetting at the age of 30 may also be the presence of urinary tract infections, such as urethritis, cystitis. Urethritis patients urethral mucosa will be stimulated by the spasm, this time will cause the urine involuntary outflow. 30 years old suddenly bedwetting, in the exclusion of mental stress of the big, too much water before bedtime still appear bedwetting phenomenon, should be timely to the urology department for consultation.