The utility model relates to a multifunctional combined tool and appliance cabinet which comprises two combined chairs and a support assembly. The combined chairs are structurally identical to each other, each combined chair comprises a back plate, a chair plate, connecting columns and a bottom plate, each chair plate is fixedly arranged at the lower end of the corresponding back plate, the connecting columns of each combined chair are symmetrically fixedly arranged at the lower end of the chair plate of the combined chair and are fixedly connected with the bottom plate of the combined chair, a connecting slot is formed in a joint of each back plate and the corresponding chair plate, more than one first limiting slide rail is arranged on each back plate, and second limiting slide rails which are matched with the corresponding first limiting slide rails are arranged on each connecting column. The multifunctional combined tool and appliance cabinet has the advantages that modification is carried out on the basis of original chairs, the combined chairs which are not used temporarily are easily combined with each other to form a cabinet body for storing tools and appliances, and support plates only need to be detached when the chairs are required, so that the forms of the original chairs can be easily restored.