The invention discloses an assembly structure. The assembly structure includes several first assembling units, each first assembling unit includes a main body part and a connection part, and the contour of the main body part is in an equilateral 6n n-gonn shape, wherein n is a positive integer; the connection parts are arranged on all the equilateral sides of all the main body parts; the connection part on each equilateral side is connected with the corresponding adjacent first assembling unit through a sliding pair, and the sliding directions of the sliding pairs are same as the extending directions, on the equilateral sides, of the sliding pairs. In this way, according to the provided assembly structure, the assembling units are connected and disassembled in a sliding fit mode, after being assembled, the assembling units can not be disassembled under natural conditions, and the assembly structure has high reliability. In addition, after the assembly is completed, if connection failure occurs at one position, the strength of the whole structure is not affected. According to the assembly structure, the assembly process is simple, no additional connectors are needed, and the cost is low.