Abstract: This dataset is prepared based on the data and information obtained from the survey of collapse, landslide, debris flow and engineering geology within the Yanzi River Basin, upstream of the Jialing River, in accordance with the unified standards and requirements of China Geological Survey (CGS). The data were acquired by remote sensing interpretation and surface survey as well as 3D laser scanning, low altitude aerial photography using UAV, and comprehensive geophysical exploration. The dataset contains 223 sets of landslide data, 170 sets of collapse data, 44 sets of debris flow data and 129 sets of data from specific geological engineering survey. The dataset covers the following information within the Yanzi River Basin:the basic attributes of geological hazards such as collapse, landslide and debris flow; geological environment background, development characteristics and distribution of the hazards; and engineering geological conditions inducing hazards. To guarantee the truth, accuracy and credibility of the dataset, processes such as field data acquisition, data collection and verification, data storage and review and a well-developed quality control system were adopted. Thus the dataset has comprehensively increased the accuracy of geological hazard knowledge and engineering geology survey in the Yanzi River Basin, providing an effective support for the study of the formation mechanism of collapse, landslide and debris flow and the study on zoning by susceptibility, hazard, and risk of these geological hazards. Furthermore, the dataset will provide reliable basic data necessary for the prevention and control of geological hazards within the basin.