Baby carriage mechanism capable of achieving automatic braking and power-assisted pushing

A baby carriage mechanism capable of achieving automatic braking and power-assisted pushing comprises a quick release seat, a wheel shaft, a rotary disc, a clutch driving rod, a manual clutch, a clutch set, a clutch pin, a flywheel, a brake disc, a motor, an elastic piece, an automatic brake pin set, a pushing key, a power-assisted key and the like. The clutch pin and the automatic brake pin set are separated from the brake disc to enable the cart to be in an external force pushing state, the pushing key is loosened, the automatic brake function is started, after the wheels rotate, the automatic brake pin set is inserted into the lock hole of the inner ring to enable the cart to be in an automatic brake state, the pushing key is pressed, and the assistance key is clicked or pressed for a long time, so that the cart is automatically braked. The clutch pin is inserted into the outer ring lock hole to enable the cart to be in a power-assisted state, the power-assisted key is released, the clutch pin is separated