The present invention comprises the steps of: (1) removing puer tea leaves from boiled water by placing puer tea leaves in boiling water and removing them after boiling; (2) dehydrating the separated puer tea leaves in the step (1), freezing them, or pulverizing them after drying to prepare processed puer tea; (3) Boil Astragalus, lotus root, white shou, ground scallion, and garlic in the boiled water of step (1), take out and dehydrate, keep frozen or dry and crushed to process Astragalus, processed lotus root, processed baekshou, processed Manufacturing ground root and processed garlic, respectively; (4) preparing a fish mixture by mixing fish and salt with the processed puer tea of the step (2), the processed Astragalus of the step (3), the processed lotus root, the processed baekshou, the processed brown root and the processed garlic; And (5) aging the fish mixture prepared in step (4). It provides a method for producing grilled fish, characterized in that it is then baked.