The utility model discloses a one-way adjustable track bearing groove mould which belongs to the technical field of a track bearing groove on a bottom mould of a bearing table type track plate mould and comprises a track bearing groove frame, wherein the shape of an inner cavity of the track bearing groove frame is matched with that of a bearing table with a blocking shoulder of a track plate; a pair of installation holes corresponding to pre-buried sleeves on the bearing table with the blocking shoulder is arranged on the track bearing groove frame; a track bottom slope (1:38 to 1:42) is arranged at the corresponding part between the track bearing groove frame and the tabletop of the bearing table with the blocking shoulder; and a transverse adjusting mechanism is connected at the outer side of the track bearing groove frame. The track bearing groove frame can be adjusted according to needs in order to adapt to the requirement that the position of the bearing table on the circular curved track plate needs to be adjusted according to curves of a line. The one-way adjustable track bearing groove mould is especially suitable for preparing the track plate for a curved segment of a high-speed railway.