Working cart with built-in dust collection system

The invention relates to a working cart with a built-in dust collection system. The working cart comprises the dust collection system and a cart body. The dust collection system is directly connected with the cart body in an assembled mode, so that useless structures can be omitted from the dust collection system, and the dust collection system can be connected with the cart body in an assembled mode with a more simplified structure. Meanwhile, the dust collection system is directly connected with the cart body in an assembled mode, so that the cart body breaks through the traditional using mode, the cart body is not only a bearing tool of a dust collector any more, and the using benefits of the cart body are greatly increased. And on the other hand, the dust storage barrel on the dust collection system has the characteristic that the dust storage barrel can be independently detached, so that an operator does not need to additionally detach other parts when replacing the dust storage barrel, and the operation