The utility model discloses a reinforce formula passenger train luggage compartment door assembly installation mechanism, including hatch door installation skeleton assembly, hatch door hinge and luggage compartment door assembly, hatch door installation skeleton assembly passes through hatch door hinge luggage compartment door assembly and connects, the luggage compartment door assembly includes side Z type skeleton, upper portion skeleton and lock box, and side Z type skeleton facies is to setting up at upper portion framework two ends, the lock box is installed in the u -shaped frame who comprises side Z type skeleton, upper portion skeleton, the upper portion connecting block is installed with the outside of upper portion skeleton joint part position to side Z type skeleton, the sub -unit connection piece is installed with side Z type skeleton joint part to the lock box, be equipped with trapezium structure and lightening hole on the lock box, a lock box surface mounting takes 3M plywood fixing tie, a luggage compartment door assembly surface covering has the outer covering of hatch door. The utility model discloses an additional strengthening that design side Z type skeleton, upper portion skeleton and the lock box that has a trapezium structure constitute is favorable to reducing local deformation, promotes the bulk strength.