A cabinet frame for easy assembly includes an upper frame and a lower frame each constituted of four corner connectors and four transverse capping pieces, and four longitudinal capping pieces connected between four corners of the upper frame and the lower frame, characterized in that: sixteen prismatic rods are used for connecting corner connectors on four corners of the upper frame and the lower frame with the longitudinal capping pieces, the corner connector being provided with protrusions and countersinks, the cross section of each of the transverse capping pieces and the longitudinal capping pieces being formed into a shape, square bores on both ends of the capping pieces being inserted by the protrusions of the corner connectors. The cabinet frame of the present invention is easy for assembly and has a simple structure. The frame constituted by assembling the corner connectors with the prismatic rods has a stable structure and a large load-bearing capacity. Furthermore, since each of the capping pieces has several mounting surfaces, the thus-obtained cabinet frame can be configured as different forms with flexible and changeable internal space, thereby conforming to the demands for products of different standards and dimensions.