The utility model provides a furred ceiling base layer skeleton system with adjustable it is three -dimensional, is including suspending suspension rod assembly and the furred ceiling shaped steel fossil fragments in the below of upper portion major structure in midair, suspension rod assembly's upper end loops through an universal connection spare and connects the otic placode subassembly to be connected with upper portion main part adjustable structure, and the lower extreme loops through the 2nd universal connection spare and the 3rd universal connection spare and adjustable connection of furred ceiling shaped steel fossil fragments. The utility model provides a during the tradition executes the furred ceiling installation, furred ceiling base layer skeleton's position and the technical problem that the angle is heavy handled and the installation quality of furred ceiling skeleton is poor, installation time is long.