The essence of light is that light has both particle property and volatility. Due to using the concept of wave and particle of classical physics, the wave-particles duality of light often cannot be correctly understood, therefore, this article elaborates how to correctly understand the wave-particle duality problems of light.%光的本质是光既具有粒子性，又具波动性。由于套用经典物理学的波和粒子的概念，往往不能正确认识光的波粒二像性，因此，本文阐述了如何正确理解光的波粒二像性问题。
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