Shell assembly for connecting building blocks

The invention relates to a shell assembly for connecting building blocks, which is suitable for being mounted on a skeleton. The shell assembly for connecting building blocks comprises an inner shell. The inner shell is detachably mounted on the skeleton, and comprises a first inner shell body and a second inner shell body which are detachably butted together and cover the skeleton, wherein the first inner shell body is provided with a first insertion hole unit formed on the outer peripheral surface, and at least two clamp grooves formed on the outer peripheral surface. The second inner shell body is provided with at least two clamp hooks which are respectively detachably clamped to the clamp grooves. The second inner shell body can be easily mounted on the skeleton and clamped to the first inner shell body, and has small possibility of being separated from the first inner shell body by the external force, and the first insertion hole unit of the first inner shell body can be used for mounting other building blocks, so that the multi-direction connection demand is satisfied. The clamp hooks enable the second inner shell body to be stably fixed to the first inner shell body, so that the second inner shell body can not be separated from the first inner shell body easily by the external force; and due to the stable combination of the inner shell, when the building blocks mounted on the first insertion hole unit are detached, the inner shell can not be pulled out from the skeleton.