A set of driving mechanism drives the multi-syringes to realize multi-channel simultaneous suction and drainage. The single plunger structure has long stroke, high control precision and long service life. The disposable tip can be inserted directly to avoid carryover caused by traditional sampling methods. Multi-channel integration, saving space and cost. Channels can be selected from 1 to 96 channels in different quantities. Specifications and sizes can be customized to meet customer needs. It is mainly used in situations requiring simultaneous control of multi-channel fluids, such as chemiluminescence, nucleic acid extraction, molecular hybridization, sample preparation, gene sequencing and other automatic analyzers.