The present utility model is a double layer hollow balloon, comprising: an outer hollow balloon (11), an inner hollow body (1), and an illuminant (2). An outer hollow balloon surface is provided with outer through holes (3), and a surface of the inner hollow body (1) is provided with inner through holes (3 '); the outer hollow balloon comprising an upper portion (4) of the outer hollow balloon, a main body (5) of the outer hollow balloon, and a lower portion (6) of the outer hollow balloon; upper and lower end surfaces of the main body (5) of the outer hollow balloon being respectively connected to the upper part (4) of the outer hollow balloon and the lower part (6) of the outer hollow balloon; and the illuminant (2) being provided inside the inner hollow body (1) and the inner hollow body (1) being connected to the outer hollow balloon by a supporting column (7). The double-layer hollow balloon according to this utility model is lightweight, robust, strong and resilient, with extended service life for outdoor use. In addition, the double-layer hollow balloon can emit visible light to improve product performance and increase interaction with the animal.
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