Aiming at planning feasible prefabricated modular cabin unit (PMCU) installation sequence for cruise ship deck, this study proposed a PMCU installation sequence planning and simulation method using a Bi-RRT path planning embedded greedy algorithm. First, the planning problem model is build by projecting the 3D deck on a planar map, then a Bi-RRT path planning embedded greedy planning algorithm is introduced to solve the installation sequence. Finally, the planned sequence is simulated and evaluated in the Unity 3D engine. Compared with manual planned cabin installation sequence, the proposed method avoids two top collisions and two pillar dismantle, and the length of the cabin moving path is shortened by 46.34m, demonstrating that the proposed method provides a prompt tool for cabin installation sequence planning.