The invention discloses a universal type diesel engine silencer which comprises a main body, a decibel detector, an inclination angle sensor and a pressure sensor; the outer surface of the upper end of the main body is fixedly provided with an air inlet pipe; gaskets are fixedly arranged on the outer surfaces of the two sides of the decibel detector; the decibel detector is fixedly arranged on theouter surface of the front end of the main body through the gaskets; a welding layer is arranged between the inclination angle sensor and the air inlet pipe; and the inclination angle sensor is fixedly arranged on the outer surface of the front end of the air inlet pipe through the welding layer. The universal type diesel engine silencer is provided with the decibel detector, the inclination angle sensor and the pressure sensor, so that the working effect of the universal type diesel engine silencer can be detected, the working efficiency of the universal type diesel engine silencer is improved, a connection situation between the universal type diesel engine silencer and a diesel engine can be known by a user conveniently, a pressure situation when the universal type diesel works can alsobe known by the user conveniently, and good use prospects are brought.