The invention discloses a broken stratum TBM jamming risk early warning method based on a torque-to-push ratio, and the method comprises the following steps of S1, collecting the surrounding rock state data through exposing a shield surrounding rock geological sketch; S2, acquiring the TBM tunneling parameter data through a TBM data acquisition system; S3, establishing a corresponding relation between the torque-to-push ratio and the surrounding rock state; S4, acquiring the tunneling state data through a TBM tunneling report recorded by a main driver; S5, establishing a jamming risk evaluation standard based on the torque-to-push ratio; and S6, through the TBM real-time tunneling parameters, according to the judgment standard, judging the TBM jamming risk, and carrying out the real-time early warning. According to the present invention, the tunnel surrounding rock state, the tunneling state of the TBM and the possible jamming risk of TBM tunneling can be effectively mastered in time,so that the constructors can master the information at all aspects in time and take the TBM jamming prevention measures in time, the jamming risk of the TBM can be effectively reduced, and the construction efficiency of the TBM is improved.