An engine electromagnetic protector solves the problem of flameout automatic protection when high water temperature and lubricating oil pressure deficiency occur inside an internal combustion engine. The utility model adopts the following technical proposal that: a signal detection mechanism consists of a water temperature sensitive switch and an oil pressure sensitive switch; an information processing mechanism consists of a relay J1 and a relay J2; an actuator consists of a relay J3 and a flameout electromagnetic valve; the water temperature sensitive switch and the oil pressure sensitive switch are connected in parallel with one end earthed and the other end connected in parallel with the coils of the relay J1 and the relay J3; the other end of the coil of the relay J1 is connected with a power switch; the other end of the coil of the relay J3 is connected with the normally open contact of the relay J1; the normally open contact of the relay J1 is connected in parallel with the coil of the relay J2, the normally closed contact of the relay J2 and the normally open contact of the relay J3; the normally open contact of the relay J2 is connected with a power switch K1; the other end of the coil of the relay J2 is earthed; moreover, the normally open contact of the relay J3 is connected with the flameout electromagnetic valve. The utility model has the advantages that: when failure occurs, the protector realizes flameout protection of an engine at a low cost.