Test probe and measuring system for engine

The embodiment of the utility model discloses a test probe for an engine, which comprises a probe body, a first hole channel and a second hole channel are arranged in the probe body, and an inflation flow pipeline is arranged in the first hole channel to be communicated with an engine cylinder for flow detection. The pressure feedback pipeline is mounted in the second hole channel to be communicated with an engine cylinder for pressure detection; the connecting piece is connected with the probe body, an external thread is arranged outside the connecting piece, and the test probe is in threaded connection with an engine cylinder through the external thread. The utility model also discloses a measuring system. According to the embodiment of the utility model, the connecting piece of the test probe is arranged to be the external thread matched with the engine cylinder, when the test probe is used, the test probe is screwed into the cylinder through the connecting piece to realize connection, and the sensor assem