The invention discloses an engine oil pressure sensor for an automobile. The engine oil pressure sensor for the automobile comprises a connector, a wire plug, a sensing chip, a spring, a sensing head, a positioning block and a connecting conducting wire, and is characterized in that a clamping block is arranged on the connector; a connecting post, a clamping buckle and a connecting contact are arranged on the wire plug; the sensing chip is arranged in an inner cavity; one end of the sensing head is connected with the sensing chip; the positioning block is arranged on the connector; one end of the connecting conducting wire is connected with the connecting post. According to the engine oil pressure sensor for the automobile, the sensing chip is arranged in the inner cavity of the connector; one end of the spring is arranged on the side wall of the inner cavity; the other end of the spring is connected with a buffering pad on the sensing chip; one end of the sensing head is connected with the sensing chip; the other end of the sensing head is arranged out of the connector; the position of the sensing chip in the inner cavity can be adjusted through the spring so that the position of the sensing head is adjusted; therefore, the sensing head can work in engine oil under different pressure, and the work efficiency of the sensor is improved.