Coaxial microfluidic device for preparing micro-droplets

The utility model provides a coaxial micro-fluidic device for preparing micro-droplets. The coaxial micro-fluidic device for preparing the micro-droplets comprises a glass tee joint which is provided with a plurality of fixing grooves, and the plurality of fixing grooves are communicated with one another; the fluorine rubber O-shaped ring is arranged in the fixing groove, and the fluorine rubber O-shaped ring is arranged in the fixing groove; the capillary tube is arranged in the fixing groove, and the capillary tube is matched with the fluororubber O-shaped ring; the inverted cone joint is arranged on the capillary tube in a sleeving manner, and the inverted cone joint is in threaded connection with the fixing groove; the operation box is arranged on one side of the glass tee joint; and the mounting mechanism is arranged on the operation box and is used for mounting an inverted cone joint. The coaxial micro-fluidic device for preparing the micro-droplets, provided by the utility model, has the advantages tha