A sleeve-component extracting jig comprising an engagement part that is to be inserted into a sleeve component press-fitted into a panel made of fiber-reinforced plastic to extract the sleeve component , wherein the engagement part has a helical thread engageable with an inner circumferential surface of the sleeve component , the thread being formed on an outer circumferential surface of a shaft body with a constant diameter, a taper surface configured by cutting off crests of the thread to lower a height of the thread toward a leading end of the engagement part , and a plurality of clearance grooves open at the leading end of the engagement part and arranged at equal angular intervals in a circumferential direction of the engagement part are formed in the engagement part , a length of a radius of the engagement part at an end position of the taper surface is a sum of a length obtained by multiplying a thickness of the sleeve component by a digging ratio and a length of an inside radius of the inner circumferential surface of the sleeve component , characterized in that a ratio L2/L1 decreases as approaching the leading end of the engagement part for the thread located between the leading end of the engagement part and the end position of the taper surface , wherein L1 is a length of an outer circumferential portion of the thread per pitch, measured along starts of the thread and assuming a case where the clearance grooves are not provided, L2 is a length of an outer circumferential portion of the thread per pitch, measured along starts of the thread in consideration that the clearance grooves are provided, and the ratio L2/L1 is equal to or larger than 0.5 entirely on the engagement part . the engagement part has a helical thread engageable with an inner circumferential surface of the sleeve component , the thread being formed on an outer circumferential surface of a shaft body with a constant diameter, a taper surface configured by cutting off crests of the thread to lower a height of the thread toward a leading end of the engagement part , and a plurality of clearance grooves open at the leading end of the engagement part and arranged at equal angular intervals in a circumferential direction of the engagement part are formed in the engagement part , a length of a radius of the engagement part at an end position of the taper surface is a sum of a length obtained by multiplying a thickness of the sleeve component by a digging ratio and a length of an inside radius of the inner circumferential surface of the sleeve component , a ratio L2/L1 decreases as approaching the leading end of the engagement part for the thread located between the leading end of the engagement part and the end position of the taper surface , wherein L1 is a length of an outer circumferential portion of the thread per pitch, measured along starts of the thread and assuming a case where the clearance grooves are not provided, L2 is a length of an outer circumferential portion of the thread per pitch, measured along starts of the thread in consideration that the clearance grooves are provided, and the ratio L2/L1 is equal to or larger than 0.5 entirely on the engagement part . <EOS>