Non-return leakage-proof bottle cap and container

The utility model relates to a backstop leakproof bottle cap and container wherein the backstop leakproof bottle cap comprises a metering cap and a base which are connected through a first thread assembly, the metering cap is provided with a clamping block, and the base is provided with a stop barrier strip for longitudinally limiting the clamping block and a disposable backstop block for transversely limiting the clamping block; after the metering cover and the base are screwed together, the clamping block is limited below the stop barrier strip and on the retaining surface side of the retaining block, and after the metering cover is subjected to unscrewing force larger than a preset value, the clamping block removes the retaining block for transversely limiting the clamping block from the base. According to the retaining leakage-proof bottle cap and the container, the phenomenon that the metering cap retreats or moves upwards due to the influence of external force in the transportation process can be effect