PURPOSE: To provide convenient, highly reliable inspection method and device of a plurality of turbine blade root parts having different shapes.

CONSTITUTION: An inspection device of a molding having a groove formed by machining has grooves 30, 32 in the length wise direction on the faced side parts, and a main housing 22 having the lower surface coming in contact with the molding to be inspected. A carriage 34 has both side parts engaging with length wise direction grooves of the main housing 22 so as to be capable of sliding. A sensor 24 for inspecting the molding is used. The sensor 24 is projected over the lower surface of the main housing 22, and coupled with the carriage 34 in the state that the degree of projection is adjustable. A reference member 56 is adjustably coupled with the main housing 22, extended from the lower surface of the main housing 22, and the main housing 22 can smoothly move by following the each groove.