A parking release monitoring device for an automatic transmission vehicle is proposed. The device includes: a receiver sensing an output signal of a shift lever; a determiner determining a target gear stage in accordance with the output signal of the shift lever; a driver transmitting a control signal to a parking solenoid to engage a parking sprag and applying a driving current to a clutch control solenoid to engage a clutch and prevent rolling of the vehicle when the determined target gear stage is a P-gear stage; and a detector measuring the intensity of the driving current applied to the clutch control solenoid, in which the determiner receives intensity information of the driving current applied to the clutch control solenoid from the detector and compares the received intensity information of the driving current with the output signal of the shift lever, thereby determining whether parking release has occurred.