Splicing type sofa seat framework

The invention relates to the field of a sofa structure, in particular to a splicing type sofa seat framework. The splicing type sofa seat framework comprises a first component, a second component andtwo side components, wherein two ends of the side components are respectively buckled to the end part of the first component and the end part of the second component through buckling assemblies, so that the four components can be spliced into a frame body with an avoiding opening formed in the middle part; in order to increase the elasticity and the sitting comfort level of a sofa seat and enablethe sofa seat not to be easily damaged, elastic pieces are arranged above the avoiding opening, and two ends of the elastic pieces are respectively connected with the first component and the second component; since the first component, the second component and the two side components can be respectively cut from a whole timber, larger space is won for cutting and composing layout optimization before cutting of the whole ti