The utility model provides a car engine hood lock, belongs to the technical field of machinery, and solves the problem that the conventional car engine hood lock is poor in commonality as the conventional car engine hood lock only can be pulled in one direction to be opened. The car engine hood lock comprises a lock housing, a lock plate, a return spring, an opening pull wire and a steering fan wheel plate, wherein the lock plate is positioned on the lock housing through a first rotary shaft; the two ends of the return spring are connected with the lock plate and the lock housing respectively; the steering fan wheel plate is positioned on the lock housing through a second rotary shaft; one end of the opening pull wire penetrates into the lock housing and is connected with the steering fan wheel plate; a linking mechanism capable of driving the lock plate to rotate for unlocking when the steering fan wheel plate rotates is arranged between the steering fan wheel plate and the lock plate; and a guide mechanism capable of changing the pulling direction of the opening pull wire is also arranged in the lock housing. The car engine hood lock can meet the mounting requirements of a left rudder and a right rudder at the same time, and is simple in structure, better in commonality and lower in required cost.