A foldable golf bag cart includes a connecting seat that has two tubular walls, each of which is formed with an interior pivot hole and a swing hole, and a positioning member that is movably mounted on a rear wheel leg. The bracket includes a first flange having a hole for receiving a securing member and at least one second flange, including at least one protrusion for engaging a cavity in a first member to be secured. The latter is pivotally mounted between a latching position that latches the rotary catch and an unlatching position that releases the rotary catch.