To further increase the detection distance of optical fiber array, a prototype of 32-element distributed feedback fiber laser hydrophone towed line array with a diameter of 16 mm is developed. The acoustic pressure sensitivity of the element reaches to －142.7 dB with the fluctuation less than ±2 dB in a frequency range of 10~2 000 Hz. Based on the time division, wavelength division multiplexing technology and acoustic optic modulator, 32-element fiber laser hydrophone array multiplexing is realized. The crosstalk between each element and each channel are both less than －40 dB. The static and dynamic towed tests on the lake are completed. The distributed feedback fiber laser hydrophone towed line array can form stable beam pointing to the target in both the static and dynamic towed state of 6～16 knots, which is the same as the GPS record. The application prospect in engineering of the distributed feedback fiber laser hydrophone towed line array is demonstrated.