To test the accuracy of shooting or guidance of weapon system, it’s necessary to measure the drop-point of missile on target ship. In order to satisfy the needs of measurement, a measurement scheme is proposed based on the optical fiber sensing technology. On the basis of analyzing the principle of fiber optic sensor measurement, the system including optical fiber sensor grid, light source emitting deceives, information collection, data processing is designed to get high precision measurement of drop-point. It shows that technical feasibility and engineering of the system can be applied by system engineering realization and research.