Multichannel electrospray micro-fluidic chip and application thereof

The invention discloses a multichannel electrospray micro-fluidic chip and application thereof. The multichannel electrospray micro-fluidic chip comprises two first gas phase flow channels and at least two liquid phase flow channels, wherein the liquid phase flow channels are arranged between the two first gas phase flow channels, and the nozzles of the first gas phase flow channels and nozzles ofthe liquid phase flow channels are arranged at intervals. In an electrospray process, due to the fact that the relative positions of the liquid phase nozzle and the first gas phase nozzle are fixed and the spray conditions are stable and consistent, the macroscopic electrospray extraction function can be achieved, the extraction efficiency and the extraction effect of extraction liquid on to-be-detected liquid are improved, and rapid detection of complex samples is facilitated; and the problem that double liquid paths or multiple liquid paths are difficult to electrospray at the same time issolved, finally more appli