A flexible reinforced tire valve is disclosed. The flexible reinforced tire valve comprises a tube body, a flexible sleeve and a collar. The flexible sleeve is further disposed with a second blocking edge. When the flexible reinforced tire valve is installed on the wheel rim, the upper edge of the collar presses against the second blocking edge and the lower edge of the collar presses against an outer surface of the wheel rim so as to strengthen the durability of the tire valve against centrifugal force, whereby the tire will not leak even if the vehicle moves at high speed.