Engine test run data processing method, device, equipment and medium

The invention provides an engine test run data processing method, device and equipment and a storage medium, and belongs to the field of engine data processing, and the method comprises the steps: collecting a plurality of pieces of slowly changing data of a certain engine test run; according to the corresponding relation between the working condition change and the working time in the engine test run process, the multiple pieces of collected slowly-changing data are divided into multiple sections, the maximum value and the minimum value on a parameter curve corresponding to each parameter in each section are solved, the maximum value and the minimum value are compared with historical data, and the envelope is updated according to the comparison result; after statistics of test run slow change data in a plurality of time periods, according to the maximum value and the minimum value on the corresponding parameter curve of each section, a statistical envelope of a local extreme value of the segmented curve is o