A plant light apparatus is provided. The plant light apparatus includes a main body, a planting region, and an emitting region. The main body includes a first plane and a second plane. The first plane is opposite to the second plane. The planting region is located on the first plane of the main body. The emitting region is a polygon located on the second plane of the main body. The plant light apparatus further includes a plurality of sets of main light sources, where the sets of the main light sources are respectively located on a plurality of corners of the emitting region, such that and an illuminance intensity of the planting region obtained from the main light sources is within a predefined luminance intensity interval.
