By comparing the interrogating criminal suspect institution of China and Korea,the paper discusses the reform of Chinese interrogating criminal suspect institution and future research. Interrogation one behavior of an investigation by law, the confession obtained by interrogation at the trial is one of the important evidences. Although the material technology has developed unprecedentedly, the interrogation is still one of the most economic ways to investigate. Through the interrogation, we can find out the criminal process, seize the evidences, reduce the investigation costs, and improve the efficiency of the proceedings. However, the interrogation system is imperfect. It leads to the infringement of the suspect which can not be prohibited entirely. It also ruins the self-value of the requirements of the criminal litigation, hinders the democratic and legal process in China. Therefore, the writer concludes the criminal suspects` rights in interrogation, analyzes the subsistent problems in the interrogation process, summarizes the overseas criminal suspects` rights in interrogation, and puts forward several suggestions on perfecting the criminal suspects` human rights at the end.