Due excessive masturbation from 6 years now i'm having problems like night falls ,hairfall ,pimples all ovr my face .i want to get orchiectomy done.

You need counselling: This is a rather uncommon concern and request. You should consult your doctor and seek some guidance regarding such major decisions.

Unrelated: There are many myths that circulate about masturbation.They are generated when the culture consider it a taboo and link it to unrelated issues as a scare tactic. Acne affects some adults well into their 30's and has a strong genetic component.Hair fall can result from many issues but not masturbation. Night falls are normal. You need to seek counseling.This thought is just a diversion.

Cleveland Clinic: "Masturbation is a normal, healthy part of your sexual development. It involves the use of your hands, fingers, sex toys or other objects to stimulate your genitals and other sensitive areas of your body for sexual pleasure. Masturbation has many documented health benefits. It may reduce stress, improve sleep and ease pain, among other benefits." For acne see a Dermatologist.