A vascular state measuring device includes a signal transceiver and a control module. The signal transceiver has a tunnel structure for arranging a to-be-measured part. The signal transceiver is configured to output an electromagnetic signal to the to-be-measured part towards the tunnel structure to generate an eddy current at the to-be-measured part, and receive an electromagnetic signal generated by the corresponding eddy current. The control module is coupled with the signal transceiver, and the control module includes a signal generation unit and a processing unit. The signal generation unit is configured to generate an AC signal and provide the AC signal to the signal transceiver to generate the first electromagnetic signal. The processing unit is configured to calculate a characteristic signal based on the first electromagnetic signal and the second electromagnetic signal. The characteristic signal corresponds to at least one state of at least one blood vessel at the to-be-measured part |