The invention discloses an indoor fabricated wallboard with a good sound insulation effect. The indoor fabricated wallboard comprises a wallboard body, the wallboard body comprises a damp-proof layer,a drying layer, a sound absorption layer, a base plate layer I, a hollow ceramic plate, a base plate layer II, a sound insulation layer, a waterproof layer and a fireproof layer, a first connecting block is arranged at one end of the hollow ceramic plate, a second connecting block is arranged at the end, away from the first connecting block, of the hollow ceramic plate, and a first connecting groove is formed in one side of the upper end of the wallboard body. By arranging the sound absorption layer, the hollow ceramic plate and the sound insulation layer, the fabricated wallboard has the excellent sound insulation effect, residents in a building can live more comfortably, and the residents have better living experience. By arranging the first connecting groove, a first connecting plate,a second connecting groove, a clamping groove, a second connecting plate and elastic connecting strips, the fabricated wallboards can be positioned, connected and mounted more conveniently, the mounting convenience of the fabricated wallboards can be greatly improved, and the indoor fabricated wallboard with the good sound insulation effect is very practical.