Due to excellent physical and chemical properties , graphite materials have become a researchhotspot in the field of sensors in recent years.A probe device based on rectangular cantilever beam , temperaturecontrol box and hygrometer are designed.The performance of strain and temperature sensor based on graphitesheet is tested.The linearity and sensitivity coeficients of strain measurement are 0.978 and 0.001 96 /u8.respectively.The linearity and sensitivity coefficients of temperature measurement are 0.945 and 0. 052 67 Ω/℃ , respectively.At the same time , the influence of humidity on the performance of graphite sheet sensor isalso studied and it is found that there is a sharp threshold elfect of humidity on the conductivity of graph itesheet.When different strains are applied, the critical humidity value of electrical conductivity mutation is about7096.The results of this study show that if graphite sheets was utilized for strain measurements ,it is necessaryto setteled in an environment with humidity below 70%.