Cable fixation device

A cable fixation device comprises a housing and a fixation piece which is dismountably fixed on the housing. The housing comprises a side wall, wherein the side wall is provided with a limitation portion and a positioning portion. The positioning portion is provided with a positioning hole. The fixation piece is provided with a fixation sheet and a buckling portion. The limitation portion is tightly clamped by the fixation sheet. The buckling portion is accommodated in the positioning hole and is stuck in the positioning portion so as to limit the cable between the fixation piece and the side wall.