A connector for combining cabinets includes a flexible connector which is deformable and is configured to communicate inner cavities of a first cabinet machine and a second cabinet machine. The flexible connector includes a hollow cavity for an electrical connector to pass through, and the hollow cavity forms a first open end and a second open end at two ends of the flexible connector. The first open end is sealingly connected to a side plate of the first cabinet machine, the second open end is sealingly connected to a side plate of the second cabinet machine, and the first cabinet machine and the second cabinet machine are two adjacent cabinet machines. The structure of the connector for combining cabinets is simple and the mounting is convenient, and the flexible connector can automatically adapt to the mounting position through its own deformation so as to meet the normal mounting requirements.