Aiming at the requirement of high temporal-spatial resolution and real time continuous measurement of ocean temperature profile,a new measurement system of shipborne towed and all fiber temperature chain is presented.The sensitivity and response time of FBG temperature sensor reach 28.5 pm/℃ and 214.8 ms respectively through special encapsulation and calibration tests of fiber Bragg grating,which meet the test requirements of shallow surface at sea area.200 m temperature towed array was designed and prepared,and the experiments were performed with demodulation equipment and winch system of deck units in parts of yellow sea whose depth is 70 m.The test results of temperature profile show that the temperature sensors are highly consistent with the SBE56(standard sensors produced by the United States Seabirds) and the measurement accuracy is better than 0.1 ℃.This measurement system has high practical value.