The invention provides a new deep carving technology for a compound wooden door inlaid line. The technology comprises steps as follows: (1), a shape of a to-be-formed groove is determined according tothe shape of the wooden door inlaid line, and a cutting tool I and a cutting tool II are arranged; (2), after height of the cutting tool I and height of the cutting tool II are adjusted according todepth of the groove required to be formed, the cutting tool I and the cutting tool II are fixed; (3), working stroke of the cutting tool I and the cutting tool II is set according to length of the groove required to be formed. A blade of each of the cutting tool I and the cutting tool II is divided into multiple parts, and shapes and specifications of all parts are different; the cutting tool I and the cutting tool II can be complementarily combined for use. The method is completed once during processing without cutting tool change, the complicated process of continuously changing the cuttingtools during traditional processing is omitted, time cost and economic cost of the cutting tools are saved; besides, one-time forming is realized, and degumming and cracking easily caused by repeatedprocessing are prevented; compared with traditional processing, the method and the processing based on the cutting tools have the advantages that production efficiency can be increased by 70%, and cost can be saved by 20%.