The invention relates to a stagnation heat flow and stagnation pressure joint measurement device and a measurement method, and relates to the field of devices for measuring the high-temperature flow field of an arc wind tunnel. The stagnation heat flow and stagnation pressure joint measurement device comprises a connecting plate, a water cooled front edge, a pressure measuring pipe, a water inletpipe, a water outlet pipe, a stagnation heat flow probe, a stagnation pressure probe and a thermocouple, wherein the water inlet pipe is horizontally and fixedly installed at the upper part of the connecting plate; the water outlet pipe is horizontally and fixedly installed at the lower part of the connecting plate; the water cooled front edge is fixedly installed at one side of the connecting plate, and the side wall of the water cooled front edge is communicated with the water inlet pipe and the water outlet pipe; the stagnation heat flow probe and the stagnation pressure probe are fixedly installed on the side wall of the connecting plate; the stagnation heat flow probe is arranged at the upper part of the water cooled front edge; the stagnation pressure probe is arranged at the lower part of the water cooled front edge; the pressure measuring pipe is fixedly installed at one side of the connecting plate along the axial direction; and the thermocouple is fixedly installed at the end, which penetrates through the connecting plate, of the stagnation heat flow probe. The stagnation heat flow and stagnation pressure joint measurement device is simple to operate and convenient to use, reduces the test number, greatly improves the test efficiency and ensures test parameters to have high precision at the same time.