To provide researchers with a comprehensive understanding of the Psychology and Behavior Investigation of Chinese Residents (PBICR), this paper introduces its background and features from four aspects. In terms of design concepts, PBICR focuses on many aspects of mental health and health behaviours in the Chinese population, takes full account of timeliness and efficiency, adheres to the original intention of data openness and data sharing, builds a high-quality database with a large-sample, multi-centre, repetitive, nationwide cross-sectional design, and promotes data mining and exchange and cooperation; in terms of survey implementation, PBICR adopts a combination of population size-proportional, multistage sampling and quota sampling, and obtains data through face-to-face field surveys with strict quality control to ensure the representativeness and reliability of the samples; in terms of output, PBICR's research content is rich and updated in line with international hotspots, which can satisfy the demand for research on diversified variables and data, and the results of its past research have a higher influence in many fields such as public health, management, communication, and psychology; Looking ahead, PBICR will gradually complete the construction of databases from the general database to sub-databases, pay attention to special populations and a wide range of regions around the world, add tracking surveys and biomedical data research perspectives, and have great research potential to drive research on the mental and behavioural health of Chinese residents through the overall layout of the multi-dimensional.