Method and device for adjusting flow of flowmeter of anesthesia machine

The invention discloses a method and device for adjusting the flow of a flowmeter of an anesthesia machine. The method comprises that a final target flow value of the flowmeter is obtained; the final target flow value is compared with a preset flow value; when the final target flow value is lower than the preset flow value, the final target flow value of the flowmeter is determined to a final target low flow value, and time for adjusting the present flow to the final target low flow value in the flowmeter is determined; the time is divided into N time periods; and the flow of the flowmeter is adjusted in each time period so that the flow value in the last time period reaches the final target low flow value. The low flow is adjusted in different time periods, the final flow of the flow meter reaches the final target flow value, and experiments show that time for adjusting the present flow to the final target low flow value in the flowmeter of the anesthesia machine can be shortened by the method and device of the invention.