The purpose of this research aims to study the effect of using online tutorials on the date of the communication of students. The population of this research is the students who studying in Faculty of Science and Technology at Rajamangala University of Technology Thanyaburi of 1381 people. These were selected by simple random sampling without replacement method, using the formula of Taro Yamane, and the sample size of 25 people. The result of this research showed the using of the online tutorials; the respondents were selected first is, making your online lessons are reviewed as needed, according for 11 people that are 44 percent. The standard error of proportion is 0.1004 units and the coefficient of variation of the ratio is 22.82%. The second result is, led to the self-study, according 10 people that are 40 percent. The standard error of proportion is 0.0991 units and the coefficient of variation of the ratio is 24.77%. The last result is, learning content of online tutorial is easy to understand, according for 10 people that are 40 percent. The standard error of proportion is 0.0991 units and the coefficient of variation of the ratio is 24.77%