The utility model relates to a transmission mechanism capable of increasing damping. The transmission mechanism comprises a steering wheel rotary shaft which is connected with a steering wheel, a rotary shaft fixing sleeve which is sleeved on a shaft body of the steering wheel rotary shaft through a first rotary shaft bearing and a third rotary shaft bearing, and a stepping motor or an encode which is connected with the steering wheel rotary shaft. A bakelite damping device used for increasing the damping is arranged between the rotary shaft fixing sleeve and the steering wheel rotary shaft. Due to the fact that the bakelite damping device is arranged between the rotary shaft fixing sleeve and the steering wheel rotary shaft, the spacial size of the transmission mechanism is smaller, the damping of steering transmission is increased, and reliability is good. Therefore, the technical problem that autorotation or rotation force of the steering wheel is small is solved, and the transmission mechanism is especially suitable for steering transmission mechanisms where the stepping motor or the encoder is adopted to output signals.