The invention relates to the technical field of a bit pressure measuring device on a near-bit part in petroleum drilling, in particular to a near-bit bit pressure measuring sensor. The near-bit bit pressure measuring sensor comprises a bearing body, high-temperature strain gages and high-temperature wires, wherein the bearing body is cylindrical; the high-temperature strain gages are four equivalent strain resistors and distributed and fixed on the end face of the bearing body in a rectangular way; the two ends of each high-temperature strain gage are fixedly connected with the high-temperature wires respectively in a corresponding way; all the high-temperature strain gages are electrically connected together through the corresponding high-temperature wires according to a bridge connection mode. The near-bit bit pressure measuring sensor has a rational and compact structure, is convenient to use and can deform along with stress on a drill collar, the resistance value of each high-temperature strain gage linearly changes when the bearing body deforms under stress, so that a voltage signal output by the high-temperature wires linearly changes, the variation interval of the signal is read, and data fitting is performed, so that the current bit pressure value can be measured; the near-bit bit pressure measuring sensor has the advantages of uniform stress, higher linearity of strain resistance value variation and capability of adapting to underground high-temperature environments.