The utility model relates to a dynamic rotating posture measuring device for drilling. The measuring device comprises a suspending paddle and a pressure-resistant drum, wherein the pressure-resistant drum is internally provided with a power board, a circuit board, a magnetic sensor, an accelerometer and a gyroscope; the magnetic sensor, the accelerometer and the gyroscope are respectively used for measuring the magnetic-field component of the earth, the gravity component of the earth and the rotating speed of the whole device; the circuit board acquires measured data of the magnetic sensor, the accelerometer and the gyroscope in real time and further calculates the drilling posture in the dynamic rotating state. The measuring device has the characteristic of real-time performance, and also has the beneficial effects that posture solving is carried out without waiting for stop of drilling of the system, the drilling posture under the dynamic rotating state can be measured, and the posture information is given out in the drilling process of the system in real time, so that the working efficiency of the system is effectively improved. Therefore, the dynamic rotating posture measuring device plays an important role in dynamic drilling.