Disclosed is a rehabilitation training apparatus that is used when a stroke patient or the like performs rehabilitation training. A rehabilitation training system includes a main device in which a plurality of unit modules are disposed on a plane at a specific interval; a board plate inserted into or coupled to the main device and including a plurality of holes; and a plurality of pegs that are inserted into the holes of the board plate, wherein each of the unit modules includes a sensor module configured to detect insertion of a peg into the hole, and a light source module configured to output light of a specific color, and if the board plate is inserted into the main device, the light source module provides output light to the outside through the hole of the board plate.