The application discloses a nine-square-pattern modeling decorative ceiling node, which comprises a main structure, a modeling frame, a decorative
assembly and a capping
assembly. The main structure comprises a left roof structure and a right roof structure. A plurality of left vertical columns are arranged at the edges of the left roof structure, and a plurality of right vertical columns are arranged at the edges of the right roof structure. A space region formed between two left vertical columns and two right vertical columns is a ceiling. The modeling frame is arranged above the ceiling. The decorative
assembly is arranged on the four walls above the ceiling. The ceiling top is sealed by the capping assembly. The construction method comprises the following steps: step one, measurement and line laying; step two, horizontal beam installation; step three,
batten frame installation; step four, modeling frame installation; step five, base
steel frame installation; step six, decorative plate
processing; step seven, decorative plate installation; and step eight, light-transmitting plate installation. The ceiling node has the advantages of seamless, assembly and size and style diversification.