A multifunctional outdoor water bottle, applicable in the technical field of outdoor supplies, comprising a bottle body (2). An upper opening is provided at the upper extremity of the bottle body (2). A lower opening is provided at the lower extremity of the bottle body (2). Provided within the bottle body (2) is a water barrier (3) partitioning a cavity of the bottle body (2) into an upper cavity (201) and a lower cavity (202). Identical external threads (5) are provided at the upper opening and at the lower opening. An upper cap (1) is connected to the thread at the upper opening. A bottom cap (9) is connected to the thread at the lower opening. A sealing ring (6) is provided within the upper cap (1). A soft material layer (4) is provided on the inner wall of the lower cavity (202). A soft inner cap (11) is detachably connected to the bottom cap (9). A transparent plastic cap is provided on the top wall of the upper cap (1). A compass (7) is provided below the transparent plastic cap. The upper cap (1) and the bottom cap (9) of the multifunctional outdoor water bottle are interchangeable; hence, if the upper cap (1) is lost, the bottom cap (9) can be used as a replacement, thus solving the problem of how to provide the water bottle with additional functions and one portable backup bottle cap, and increasing the functionality and durability of the water bottle.
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