Abstract: In order to study the laws of hazardous chemical explosion and fire accidents, we built the database frame based on material information. About 600 explosion and fire accidents of hazardous chemicals from were collected, based on which, a MySQL structured database was established to manage seven aspects of information, such as material information, hazardous substances, process equipment, space-time information, accident performance types, accident occurrence links and accident hazards. The temporal and spatial information law, link distribution law, high-frequency accident equipment and high-frequency hazardous substances of dangerous chemical explosion and fire accidents have be analyzed. It’s found that dangerous chemical explosion and fire accidents occur frequently and even increase, especially reaching a high point in the period from 2014 to 2015, and then began to decline. The accident occurred mainly in the eastern coastal area, of which Shandong and Jiangsu provinces were the most serious. The number of accidents and casualties in the production of hazardous chemicals are the most significant, which should be paid attention to. The frequency of dangerous substances is the highest among oil and gas, explosives and nitrobenzene, and the dangerous substances have obvious regional differences.

Key words: hazardous chemicals, explosion and fire, accident database