【Abstracts】The invention discloses a device for measuring the susceptibility of a nano magnetic liquid, and the device provided by the invention comprises a sample measuring unit, a sample control unit and a data analyzing and processing unit, wherein the sample measuring unit is used for measuring a sample to be measured; two capillaries which are made of the same material and are same in dimension are arranged on the sample control unit; one of the two capillaries is filled with the sample to be measured, and the other capillary is an empty test tube; the sample control unit enables the two test tubes to be alternately in and out the sample measuring unit; and the data analyzing and processing unit is used for collecting, storing and processing the data of the sample measuring unit and controlling the motion of the sample control unit. The invention also discloses a method for measuring the susceptibility of a nano magnetic liquid by utilizing the device provided by the invention
