We built a novel eye-exercise training device guided by LED's lighting for improving the myopia. The device consists of a frame of glasses with several LEDs embeded on it. The lighting of the LED is controlled by a programmable microprocessor. Our device is portable and wearable, so it is more convenient to be used by pupils than conventional devices which are fixed on the wall and too large to be taken along. According to the test results, our device can improve the sight of the testee.