The stealth design of torpedo defense launcher is studied and two different schemes are proposed in this paper. In the first scheme，the launcher is integrally lifted by adding auxiliary motion mechanism of guide rail. In the second scheme，the pitch mechanism is eccentrically processed，so that the launcher is completely under the deck in non-wartime state，and extends out of the deck at wartime for normal operations. After further analysis and compare between two proposals，the second scheme is selected，and technical approaches are established to complete the scheme. However，partial load may occur during operation which will affect the accuracy of dynamic tracking. In order to achieve the standard of tracking accuracy，an adjustment of the launching sequence of the launcher is proposed，the material rigidity of launcher and the power of electrical motor is increased.
