What should I do if I sign a contract with an enterprise that does not have the qualification to deepen design?

You can apply for labor arbitration or bring a lawsuit to the court.

This contract belongs to a contract whose validity is to be determined. If the obligee approves the agent's agency behavior, the contract is valid. No design contract can be signed without the design qualification certificate issued by the Ministry of Construction. If your company is a consulting company registered by the regular industrial and commercial bureau, you can sign a design consulting contract, and the task can only undertake the preliminary consulting planning and architectural design scheme of architectural design.