In order to study the human-induced vibration control of pedestrian bridges, the human-bridge-TMD coupled motion equations based on random walk model are derived;Then, the peak acceleration, the first-order instantaneous damping ratio, the first-order instantaneous frequency and their coupling effects are calculated and analyzed;Finally, taking a certain bridge in Jingzhou as an example, the vibration reduction effect is measured, and the vibration reduction optimization design of man-bridge-TMD is carried out.The results show that the first order instantaneous damping ratio increases with the increase of modal mass and the first order instantaneous frequency decreases with the increase of modal mass.Under the control of TMD, Tc = 0.2, 0.4, 0.8, 1.2/m2, the damping rate was 76%, 73%, 69%, 56%, and the average damping rate was 68.5%.With the increase of the density of the random population, the damping rate increases first and then decreases. The results can be used as reference for vibration control of footbridge.