In order to solve the problem that the multi-touch gestures under the ARINC661 specification have large data volume and low recognition efficiency, and it is difficult to accurately locate the relevant window components, a multi-touch gesture data extraction algorithm is proposed. According to the ARINC661 specification, the multi-touch contact data and gesture data extraction algorithm are designed, the original data is pre-detected and standardized, and the single-touch gesture data and the multi-touch gesture data are unified, according to the contacts locate relevant widget part. The test results show that the algorithm is reasonable and feasible, and the software runs reliably. The extracted touch gesture data can provide a basis for gesture recognition.