Abstract: Even when a pasting target body to which prepregs are pasted has a shape changed portion such as a curved portion, prepreg pasting states are accurately inspected. A prepreg pasting state inspection apparatus 2 for inspecting a gap G between prepregs 4 adjacent on a pasting target body 3 has a laser 21 for emitting slit light LA along an inclined plane so that a projected pattern X of the slit light is formed across the adjacent prepregs 4, a camera 22 for imaging an irradiation region of the laser 21, a control unit 24 as a determination unit for determining whether the gap G between the adjacent prepregs 4 is within an allowance based on a signal from the camera 22, a range sensor 23 for measuring a distance between a reference position and the irradiation region, and focus adjusting units 25 and 26 for adjusting focus positions of the camera 22 and the laser 21 based on the signal from the range sensor 23.