The invention discloses a mirage phenomenon and light bending transmission track experiment demonstration device. A water channel is disposed in a base, and a laser disposed on a laser support is disposed behind the water channel in the base. The left part of the inner side of the water channel is provided with a first clapboard vertical to the front side wall and the rear side wall of the water channel in a sealed manner, and the right part of the inner side of the water channel is provided with a second clapboard vertical to the front side wall and the rear side wall of the water channel in a sealed manner. The first clapboard and the left side wall, the front wall, and the rear wall of the water channel are used to form a cooling water channel, and the second clapboard and the right side wall, the front wall, and the rear wall of the water channel are used to form a contrast water channel. The first clapboard and the second clapboard and the front side wall and the rear side wall of the water groove are used to form a mirage water channel. The first clapboard is embedded with an upper semiconductor refrigeration sheet and a lower semiconductor refrigeration sheet in a sealed manner in a vertical direction. A gradient plate is disposed on the front side wall and the rear side wall of the water channel 5 to10cm away from the first clapboard in the mirage water channel in a sealed manner. A first observation body and a second observation body are disposed on the positions behind the water channel, opposite to the mirage water channel and the contrast water channel, of the base. The mirage phenomenon and light bending transmission track experiment demonstration device has advantages of reasonable design, simple structure, and visual demonstration effect.