Patients who undergo kidney transplantation take immunosuppressive drugs that make them susceptible to different infections. Since fever is one of prominent symptoms of infection, continuous measurement of temperature is very important. Patients who undergo kidney transplantation need urinary catheterization during and after surgical procedure, we can use temperature measurement catheters instead of general catheters in bladder, these intra vesical catheters can reestablish urinary drainage and measure temperature at time. The goal of this research is to find if there is any significant difference between intra vesical temperature, with , rectal and axillary temperature? In this study with statistically considerations 20 patients with kidney transplantation admitted in Kidney Transplantation center of Ghaem hospital, axillary, and intra vesical temperature were checked every 2 hours and rectal temperature was checked every 12 hours since the day after transplantation and analyzed until 4 days after transplantation and noted in a questionnaire. Analysis of data was done with SPSS, descriptive and analytic statistical methods. We used T-test, Pierson and ANOVA test in this research. According to ANOVA test it’s shown that because of P<0.001 there is a significant difference among these four methods of temperature measurement in first four days after surgery. But Pierson test shows that there is a linear and direct relation between intra vesical temperature and other three methods (Pierson number is +1 or very closes to +1). This research shows that despite significant statistical difference between intra vesical and other three methods , we can use intra vesical temperature as an appropriate criteria for body temperature measurement, because there is a linear and direct relation between this method and other three methods.