A motor circuit with power-off braking function includes a driving unit, a coil unit, and a braking unit. The driving unit includes a plurality of switch arms connected in parallel, with each switch arm having a series contact. The coil unit includes a plurality of coils and a central contact. Each coil includes an end connected to the series contact of one of the switch arms. The other end of each coil is connected to the central contact. The braking unit includes a brake loop switch coupled between the central contact of the coil unit and an end of the switch arms. When power is cut off, a plurality of brake loops is formed to share the transient current during braking.