The invention provides an optimized mounting structure for a dome type ceiling. The optimized mounting method comprises the following steps: arranging an arc-shaped veneer, a conversion layer and a connecting mechanism, fixedly mounting the conversion layer onto a ceiling, and mounting the arc-shaped veneer onto the conversion layer, wherein the connecting mechanism comprises a first connector, asecond connector and a third connector, the first connector and the second connector are mounted on the conversion layer, the third connector is mounted on the ceiling, a first mounting part, a secondmounting part and a third mounting part are arranged on the arc-shaped veneer, the first mounting part is rotatably connected onto the first connector, the second mounting part is elastically connected onto the second connector, and the third mounting part is fixedly connected to the third connector. The invention further provides an optimized mounting method for the dome type ceiling. Compared with the prior art, the optimized mounting structure improves mounting efficiency of the dome type ceiling, reduces material loss caused by secondary processing in a later-stage mounting process, reduces working difficulty of a climbing operator to certain extent, and improves project construction safety.