This paper reviews major criminological data collected in China over decades. Very few quantitative criminological data-sets are available to international and comparative scholars because of the sensitivity of the topic. Studies have been scattered and intertwined in other areas of study, such as law. However, several major projects have been conducted, although they may not be widely known to the international research community. The paper describes and analyzes the major projects in terms of their designs, samples, and measures. It also assesses their nature, scope, and utility that may be informative for further research on crime and justice in China.