The invention discloses a teaching training system for a marine engine room. The system is composed of a hardware system and a software system. The hardware system includes a trainer machine including a machine body; and the machine body consists of a first machine body and a second machine body that are connected mutually. The first machine body is provided with simulation computerd, an engine room fan and auxiliary engine control operation indication lamp, a keyboard and mouse zone, and a telegraph; and the keyboard and mouse zone is a first keyboard and mouse zone. A left tooth misorientation hole and a keyboard and mouse zone are arranged at a first host, wherein the keyboard and mouse zone is a second keyboard and mouse zone. Besides, the second machine body is equipped with telephones, left host rotation speed units, a host security protection display unit, a left host alarm indication unit, an engine telegraph, and a right host alarm indication unit. According to the teaching training system, collection and graphical displaying of real-time data of an engine room during the ship operation are added; and fault simulation and processing training can be carried out by combining the practical ship operation situation.