Multi-channel micro-fluidic chip and mass spectrum combined device

The invention discloses a multi-channel micro-fluidic chip and mass spectrum combined device. The multi-channel micro-fluidic chip and mass spectrum combined device comprises a micro-fluidic chip and an electric spraying mass spectrometer. The micro-fluidic chip is provided with a plurality of micro channels which are connected in parallel, and the outlet of each micro channel is communicated with a chamber. Each chamber is communicated with a main channel, and the other end of each main channel is a waste liquid outlet. One end of each main channel is close to a chamber and is communicated with a side channel, and the free end of the side channel is an extraction agent inlet. Height difference exists between the side channel and the main channel, and the upper rim of the side channel is arranged on the lower portion of the upper rim of the main channel. Sample outlets are communicated with sample outlet pipes respectively, wherein the outlets of the sample outlet pipes are arranged above the electric spraying device, and liquid drops generated by the electric spraying device is detected by the electric spraying mass spectrometer. A plurality groups of experiments can be simultaneously conducted by the multi-channel micro-fluidic chip and mass spectrum combined device, and real-time mass spectrum detection can be conducted after on-line sample pretreatment is conducted in the micro-fluidic chip.