Micro-droplet generation method and micro-droplet generation systems

The invention provides two micro-droplet generation systems and a micro-droplet generation method adopting the two micro-droplet generation systems. The micro-droplet generation system comprises a micro-fluidic chip and an electrode driving unit, wherein the micro-fluidic chip comprises a top cover and an electrode layer, the top cover comprises an upper cover, a conductive layer and a first hydrophobic layer which are sequentially arranged, the electrode layer comprises a second hydrophobic layer, a dielectric layer and an electrode array layer which are sequentially arranged, the first hydrophobic layer and the second hydrophobic layer are oppositely arranged, and a liquid drop flow channel layer is formed between the first hydrophobic layer and the second hydrophobic layer. The large droplets are controlled to pass through the electrode array layer, and the large droplets are enabled to leave small droplets on a path through which the large droplets pass by controlling the electrodes. Or array type hydroph