This is a four-channel/ double-channel dispensing controller for application scenarios of multiple-syringe collaborative dispensing, without the need to stack multiple conventional single-channel dispensing controllers. The total space occupied by the four-channel/ double-channel dispensing controller is significantly reduced, and one-way air supply pipe and power supply facilitates fast piping and wiring, while the completely independent parameter setting and dispensing/ suction-back pressure adjustment function for each channel are retained.