The invention discloses a loading and excavating all-in-one machine with a excavating arm capable of rotating at 360 degrees or more. The loading and excavating all-in-one machine comprises a vehicleframe, wherein the vehicle frame comprise a first vehicle frame located on a driving wheel and a second vehicle frame positioned on a steering wheel; and a cab is arranged on the upper part of the first frame, a loading mechanism is arranged at the left end of the second vehicle frame, the right upper corner of the first vehicle frame extends rightwards to form a tower base, an excavating mechanism is arranged on the tower base, and the excavating mechanism can rotate at least 360 degrees anticlockwise or clockwise on the horizontal plane. Compared with the prior art, the loading and excavating all-in-one machine has the advantages that movable range of excavating operation is larger, and flexibility is higher.