The way to deal with the restaurant closure caused by airport catering staff is

1. Contact the airport management department: First, contact the airport management department or the relevant person in charge to explain the situation in detail and express your concern. Provide accurate information, including the reasons for the restaurant's closure, the scope of influence and your economic losses.

2. Seek compensation or solution: negotiate compensation or seek solution with the airport management department. You can make reasonable demands, such as asking for financial compensation to make up for the losses during the suspension of business, or seeking other forms of compensation measures.

3. Seek legal advice: If the negotiation and settlement with the airport management department fail to achieve satisfactory results, you can seek legal advice. Consulting a professional lawyer can help you understand your rights and provide legal advice and guidance so as to take further legal action.