Abstract: Objective The study designed to approach a more complete statistical method of the multiple comparison among several sample rates obtained from binomial distribution data with Mote Carlo method on a computer.Methods After calculations and analyses,the formal experimental factors were determined.The population rate:0125;the sample numbers:3,4,5,6,7,8,9,10;the sampling times:1000000;the probabilities:0.90,0.75,0.50,0.40,0.30,0.20,0.10,0.05,0.025,0.01,01.005.Result After a large number of calculations the χ²-test critical values for the multiple comparison among several sample rates were brought out.Conclusion Reasonable analyses show that the critical values have high accuracy.