The utility model discloses a miniature sprayer for moisturizing and improving eyesight by utilizing tea water. The device comprises a storage container for storing tea water, an output channel and anatomizer, the atomizer is connected with the storage container through the output channel; the atomizer comprises small atomizing holes, a high-frequency vibrating reed and a high-frequency generator, the high-frequency generator is connected with the high-frequency vibrating reed, the high-frequency generator sends out high-frequency signals with the frequency range of 100-120 KHz to drive the high-frequency vibrating reed to vibrate at a high speed, and tea water is beaten into tiny mist particles to be sprayed out through the small atomizing holes. According to the miniature sprayer, high-frequency signals with the frequency range of 100KHz-120KHz are adopted to drive the high-frequency vibrating reed to vibrate at a high speed; tea water can be beaten into sub-nanoscale mist particlesand then sprayed out through atomization small holes with the hole diameter ranging from 0.3 micrometer to 3 micrometers, the sub-nanoscale mist particles can be conveniently and rapidly absorbed bythe skin of people and cannot be accumulated into water drops to flow down, use is convenient, proper tea water is matched, and the water supplementing and eyesight improving effects are remarkable.