The utility model relates to a trompil installing the system, including installation mechanism, installation mechanism include the suspended span at the support fender bracket of submarine pipeline top, set up at base that supports the fender bracket top and the installation department that can move on the base, support fender bracket top is equipped with and supplies the base to be located in the guide post that supports the fender bracket top, is equipped with on the base and matches, makes the base to be located in the guide hole that supports the fender bracket top with the guide post. The utility model discloses a set up mobilizable installation department and make trompil installing the system can more make things convenient for ground and submarine pipeline to need the position of trompil to counterpoint on the base, simultaneously the utility model discloses still have multiplex condition operability, underwater construction is efficient, low, the work progress safety of the construction degree of difficulty, and prefabricated with low costs.