The invention provides a split type luggage case with a chair, belonging to the technical field of luggage cases. The split type luggage case comprises a case body, wherein the case body comprises anupper case main body and a lower case main body which are arranged vertically; the upper case main body and the lower case main body are connected through at least two telescopic structures, the telescopic structures are respectively arranged on two opposite sides of the case body, each telescopic structure comprises a fixed section and a telescopic section which are connected with each other, and the telescopic section connects the lower case main body; two sliding rails and a chair plate are arranged between the upper case main body and the lower case main body, the two sliding rails are arranged along the width direction or the thickness direction of the case body, and are respectively mounted on the fixed section of the telescopic structure; the chair plate is mounted on the two sliderails in a sliding mode, the chair plate is hollow, a communication opening enabling the inside of the chair plate to communicate with the outside is formed in the side surface, adjacent to the sidewhere the sliding rail is located, of the chair plate, and a supporting plate is arranged at the communication opening; one end of the supporting plate is rotationally mounted on the chair plate through a supporting shaft, and the supporting shaft is connected with the chair plate in a sliding mode. The split type luggage case with the chair is provided with a plurality of independent containing spaces, the volumes are variable, and meanwhile, the split type luggage case is provided with the hidden chair.