Article 77 of the Property Law stipulates that changes in the use of property functions should comply with laws, regulations, management statutes and obtain the consent of the interested owners. Negotiate with the owner, can not do catering, because there are too many hidden dangers and uncontrollable factors. Explain to the owner that the catering business needs the approval of the industrial and commercial \ fire \ sanitary epidemic prevention departments, and need to have the consent of the interested owners. If the owner wants to operate as a cafe only, consider the possible negative impact on the management of the property and find out how to avoid it. It is necessary to sign a guarantee with the owner, to take into account all the responsibilities, and to consider whether the power distribution will be able to meet the power requirements of the equipment used in the business.