The Iranian nuclear deal should be complied with to keep regional peace, said Premier Li Keqiang and German Chancellor Angela Merkel on Thursday when meeting with the media.

The multilateral deal, which was approved by the UN Security Council, should be safeguarded and China appreciates all parties' endeavors, including Germany's, to keep this deal working, Li said.

If this deal is overturned, the impact will not only be on the Iranian nuclear issue but also other international issues that should be resolved through political means, he added.

Merkel said Germany will not pull out of the deal, which is the best choice after rounds of tough negotiations. Germany and China believe the deal is worth protecting, she said.