The invention relates to a welcome robot, in particular to an intelligent welcome robot and an operation method thereof. Including chassis assembly, lower body support assembly, bending assembly, upper body support assembly, head nodding assembly and arm assembly, the upper part of the chassis assembly is provided with a lower body support assembly, and the upper part of the upper body support assembly is provided with a bending assembly , the bottom end of the upper body support assembly is positioned with the bending assembly, the upper part of the upper body support assembly is provided with a head nodding assembly, and the two side walls of the upper body support assembly are respectively provided with arm assemblies. An intelligent welcome robot and its operation method have the advantages of compact structure, small size, light weight, high reliability, beautiful appearance, low manufacturing cost, and convenient assembly, disassembly and maintenance.