A nipple storage case structure is provided for storing and carrying a cleaning brush therein. The nipple storage case covers a nipple structure including a nipple having a protrusion having a milk powder outlet, and a guide ring coupled to a lower portion of the nipple, and covering the nipple of the nipple structure. An upper cap inserted into and coupled to an upper portion of the ring, a lower cap including a protrusion inserted into a lower portion of the guide ring and extending toward the nipple through the interior of the guide ring, and a cylindrical portion connected to the protrusion; And a cleaning brush, which is defined in the interior of the interior of the cylindrical portion and in the interior space of the lower cap. Due to this, it is possible to clean the foreign matter inside the nipple, it is possible to provide a nipple storage case structure excellent in portability because there is no need to store the nipple cleaning brush and the bottle separately.
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