To provide construction machinery capable of reducing noises in an upper section, ensuring the cooling capacity of an engine.

In the construction machinery, which has a bonnet 3 constituting a top face and in which the engine 6 and an electric fan 61 for cooling a radiator are housed, a sound absorbing material 31 is annexed onto the internal surface of the bonnet 3 and an air flow passage 51 is formed between the engine 6 and the sound absorbing material 31, and an opening 32 making air passing through the air flow passage 51 flow out is formed to a section rearer than the anti-fan side of the engine 6 in the bonnet 3.