This study mainly aims at whether the society supports or disagrees with certain issues, and uses social networks among people to update their opinions. In this study, the matrix is used to construct this issue. By using the computer simulation, when the matrix is a positive definite, we find that it will eventually converge. Therefore, this topic must have a conclusion. If it is not positive, the simulation results show that there are two situations occur. One is that the two will cycle, and the second is to converge. Furthermore, the program is attached in the appendix.