The invention discloses a garden seedling cultivation device. The device comprises motors, a second baffle, a switch, road wheels, a water pump and water collecting tanks. In clear weather, the rotation of each motor is used to drive reeling wheels to rotate to realize the reeling of lifting ropes, thus further making one side, connected to a support plate, of a first baffle plate rotated, so thata first placing plate and a second placing plate are prevented from being shielded, the second baffle is arranged for shielding the motors, when seedling pots need to be watered, the water pump is started by the switch, water in a collecting tank is pumped into water storage tanks through water guide pipes with the use of the water pump, and the water is further sprayed out through spray heads, so as to realize the watering of the seedlings. There is no need of artificial watering, thus manpower is saved to a certain degree, the water collecting tanks are arranged for collecting rainwater, the rainwater further enters the collecting tank through the water guide pipes, so as to realize effective utilization of the rainwater, a filter screen is arranged for filtering the rainwater, and theroad wheels are arranged to facilitate a user to push the device to move.