business department. According to the current national management standards, urban gas is headed by the housing and urban-rural construction department, which is responsible for the approval of gas business, while liquefied gas bottles belong to pressure vessels, which are supervised by the special equipment management department of the market supervision administration, and catering places are managed by the commercial department. According to the relevant stripes of the new law, the principle of safe production in which whoever is in charge is responsible belongs to the commercial department management.