Abstract: A fixing device for a flowmeter component is provided. It includes two fixing supports respectively fixed on two sides of the flowmeter component. Each fixing support is formed with a connecting arc, and the connecting arc is axisymmetric about a vertical direction. When the flowmeter component is a driver on a Coriolis mass flowmeter, the two fixing supports are fixed to two sides of the driver respectively, and the driver is fixed to flow tubes of the Coriolis mass flowmeter through the connecting arcs on the two fixing supports, to complete installation and fixation of the driver. This structure can make the connection stiffness of each the fixing support and the flow tube be symmetrical about middle plane of the flow tube, thereby avoid undesirable deformation caused by vibration in a working process of the flow tube, and improve zero-point stability and overall performance of the Coriolis mass flowmeter.