As a matter of fact, since dark matter was proposed in 1922, the beginning of the 20th century, the research on what dark matter is has been carried out continuously implemented until now. In the course of the study, different scholars put forward different theories and hypotheses. Since the nature of dark matter has not been explored. With this in mind, this paper summarizes the development of dark matter based on the existing research conclusions and expounds the confirmed nature of dark matter and the research methods of its two candidates, i.e., WIMPs and Axion. To be specific, the model configurations of the two candidates are evaluated. In the meantime, the searching facilities have been discussed. At the same time, the current detection results are demonstrated though no determination signs have been recorded for the existence of the dark matter candidates. According to the analysis, the current limitations and prospects for further searching are also provided, shedding light on guiding further exploration of dark matter searching.
