Multifunctional health analyzer in use process, diluter samples were blocked in pipeline will affect their normal work.In order to ensure the equipment running smoothly, this paper design the suitable for multifunctional health analyzer to collect system. The system uses lowpower STM32F205VET6 as microprocessor, with modular structure design, including the pressure detection module, pump valve drive module, memory module, serial communication module and CAN communication module, etc.Firstly need to calibration in the operation process to set the alarm parameters, and the normal work of the analyzer process, realtime detection of pipeline in negative pressure, jams automatic alarm and cleaning, and improve the measurement accuracy.