Which treatment helps to stop wet dreams(for stopping sperm leakage at night)? does pennis cauterization helpful?

Nocturnal emission (involuntary erection and ejaculation of semen) is entirely normal and does not need treatment. "Cauterization" of the penis will have no effect on this.

"wet' dreams at night are a normal occurrence specially in sexually inactive young men. Unfortunately it is considered 'Bad' in some cultures and not to be something to worry about- which is wrong. No treatment needed. When you will become sexually active they will go away. You will be fine