The invention discloses a motor reversible rotation device with an adjustable time length. The motor reversible rotation device comprises a motor and a time relay. The time relay comprises a time relay T1 and a time relay T2 that are arranged in parallel in a 380V circuit. The relay T1 is connected in series with the normally open contact NO of an intermediate relay Z1. The time relay T2 is connected in series with the normally closed contact NC of the intermediate relay Z1. Two three-phase solid-state relays are disposed in the 380V circuit. The input end of the three-phase solid-state relaySSR1 and the input end of the three-phase solid-state relay SSR2 are connected with each other. The output end of the three-phase solid-state relay SSR1 and the output end of the three-phase solid-state relay SSR2 are connected with each other. One end of the three-phase solid-state relay SSR1 is connected to 24V through the normally open contact S1 of the time relay T1. One end of the three-phasesolid-state relay SSR2 is connected to 24V through the normally open contact S2 and 24V of the time relay T2. Both sides of the intermediate relay Z1 are provided with a switch K1 and a switch K2 respectively. The motor reversible rotation device is convenient to operate and has various control modes.