Circuit arrangement method for hematology analyzer and circuit

The invention provides a circuit arrangement method for a hematology analyzer for a hematology analyzer and a circuit. A circuit board is divided into a signal board provided with both a low-noise circuit and a noise sensitive circuit, and a driver board provided with a noise circuit, an interference device or a drive circuit externally connected with an interference, the signal board and the driver board are separately arranged and connected for communication; and power source terminals of the signal board and the driver board are respectively connected in series with a common-mode rejection inductor. Owing to the circuit arrangement method for the hematology analyzer and the circuit, the whole hardware system of the hematology analyzer is divided into the signal board and the driver board through physical isolation; only one serial port is required to be arranged between the signal board and the driver board to transmit control commands, so that the two circuit boards are isolated to the maximum extent; the