A plant cultivation device and a greening apparatus thereof are provided. The plant cultivation device includes a fixing member which includes a first channel, a shared channel and a plurality of first through-holes. The first through-hole is connected with the first channel and the shared channel, and passes through an upper surface of the fixing member. Both the first through-hole and the shared channel are stack-up with each other, and the first through-hole is located above the shared channel. The shared channel is configured to fill with a cultivation medium,and the first channel is configured to store water flowing from the shared channel by the first through-hole when too much water is stored in the shared channel. The present disclosure can optimize a growing environment of plants.
