Quantitative sensory testing of the thermal sense has not been established on the site of the medical treatment and rehabilitation now. In this research, we developed thermal stimulator with peltier module which allowed to control stimulus temperature by PID control in high accuracy, and examined the distribution of the thermal perception on the human hand. We used this and experimented on the hand palm side of the dominant hand to the part of 29 which considered the rule area of the nerve. Ten subjects(21-23 year old men) participated in this study. The part where the thermal sense was sensitive was developed by the experiment, and the perception distribution of the temperature was discovered. Cold stimulus threshold on proximal phalanx was lower than distal phalanx that on significantly (P<0.05).