The safety hazards and preventive measures in the canteen are as follows:

1. Use of food additives: Check whether the use of food additives meets the relevant standards, whether it meets the requirements of special store procurement, counter storage, special person in charge, special tools, special ledger and so on.

2. license: check whether there is a license for catering service, whether the actual business items are in line with the permitted scope, and whether there are problems in exceeding the scope of business.

3. food processing: check whether the places and equipment for storing food raw materials are kept clean, and whether it is forbidden to store toxic and harmful articles and personal articles.

4. canteen environment: check whether the canteen environment is regularly cleaned and kept in good condition, whether there are protective measures to eliminate rats, cockroaches, flies and other harmful insects and breeding conditions, and whether there are adequate ventilation and smoke exhaust devices.

5. Cleaning and disinfection: check whether the canteen is equipped with effective washing and disinfection facilities, and the number meets the actual needs, whether there are special cleaning facilities for tableware, whether the disinfection pool is mixed with other pools, whether the disinfection personnel have mastered the basic disinfection knowledge, and whether the disinfection effect of tableware meets the relevant requirements.

4. canteen environment: check whether the canteen environment is regularly cleaned and kept in good condition, whether there are protective measures to eliminate rats, cockroaches, flies and other harmful insects and breeding conditions, and whether there are adequate ventilation and smoke exhaust devices.

5. Cleaning and disinfection: Check whether the canteen is equipped with effective cleaning and disinfection facilities, and the quantity meets the actual needs.