Disclosed herein are a pure silver device and a method for diagnosing and treating pain on human body. The pure silver device comprises an elongated handle, a head having both a hammer head and a comb opposed to each other, a panel, and an outwardly extending protrusion on the bottom end of the handle. The pure silver device is used to diagnose and treat pain by finding out pressure pain points on both abdominal area, at which root of pain is located, and a symptomatic area of the human body and then by releasing the pressure pain points by tapping, pressing, rubbing, combing or combining the foregoing. Owing to the highest thermal and electrical conductivity of silver, the pure silver device produces amazingly better stimulation of the pressure pain points. Therefore, the pure silver device is more effectively used for diagnosing and treating pain than other devices made out of any other material, even sterling silver and magnetic material. In addition, the pure silver device is portable and useful in that anyone can diagnose and treat himself or herself anytime and anyplace. The pure silver device and the method are simple, easy, safe without any side effects and medical risks, and economical.