The invention relates to a full aluminum furniture side frame inclined splicing connecting structure, which comprises a first side frame (1) and a second side frame (2), wherein the first side frame (1) and the second side frame (2) are arranged in a way of being vertical to each other and are connected through a connection screw (4); the first side frame (1) comprises an abdominal cavity (11) and a clamp groove (12); a screw connecting part (13) is arranged in the abdominal cavity or the clamp groove of the first side frame (1); the connection screw (4) extends the abdominal cavity or the clamp groove of the first side frame (1) from the length edge direction to the short edge direction of the second side frame (2) to be connected with the screw connection part (13) arranged in the abdominal cavity or the clamp groove. The full aluminum furniture side frame inclined splicing connecting structure provided by the invention has the advantages that the screw is used for replacing an original corner connector; the original corner cutting work procedure is omitted; the connection and the installation are more convenient; the production and manufacturing cost of furniture is greatly reduced.