Laser demonstration box with water curtain

The invention relates to a laser demonstration box with a water curtain. A plurality of laser devices are fixed inside or outside a frame. Reflecting mirrors are fixed to the left plate face, the right plate face, the top plate face, the bottom plate face and the rear plate face of the frame respectively. A plurality of stereo speakers are fixed to the two sides of the top of a frame channel respectively. A plurality of resonance speakers are fixed to the bottom of the frame channel. A projector is fixed to the top of the frame channel. Holographic laser protection films are pasted on the reflecting mirrors. An amplifier is fixed to the bottom of the frame channel. A mist machine is located at an inlet of the frame. A computer is connected with the laser devices, the projector and the amplifier. The amplifier is connected with the stereo speakers and the resonance speakers. A water curtain pool is located on the bottom plate face of the frame. A vibrating bar is fixed into the water curtain pool. The laser de