To provide a locking mechanism of a wheel used for a hand-pushed dolly in which rotation of the wheel is automatically locked at stopping of the vehicle and the lock state is easily released at traveling.

The hand-pushed dolly is constituted as follows. The locking mechanism of the wheel used for the hand-pushed dolly is provided with a handle mounted to an upper part of a frame constituting a vehicle body; and the wheel mounted to a lower part of the frame. The locking state is maintained by fitting a pin urged by an elastic body to a recession part of a locking board connected to the wheel or integrally provided on the wheel. A wire is pulled and the pin is removed from the recession part accompanying with turning of the handle, thereby, the locking state of the wheel is released.