A portable capsule coffeemaker, comprising a first cavity, a second cavity, and a cup (100). A water tank (200) and a heating apparatus (300) for heating the water tank (200) are provided in the first cavity. A battery (400), a water pump (500), a capsule chamber (600), and a piercing structure (700) are provided in the second cavity. A piercing knife (61) is provided in the capsule chamber (600). The bottom of the capsule chamber (600) is detachably connected to the piercing structure (700). A water inlet and a water outlet of the water pump (500) are communicated with the water tank (200) and the capsule chamber (600) respectively. The piercing structure (700) is used for piercing the bottom of a coffee capsule placed in the capsule chamber (600) and communicating the coffee capsule with the cup (100). The battery (400) is used for supplying power to the heating apparatus (300) and the water pump (500). Hot water in the water tank (200) of the portable capsule coffeemaker is automatically converted into high-pressure water after passing through the water pump (500). The high-pressure water can flow into the coffee capsule from a position at the top of the coffee capsule where the coffee capsule is pierced by the piercing knife (61). When the pressure in the coffee capsule reaches a particular value, the piercing structure (700) pierces the bottom of the coffee capsule so that brewed coffee liquid in the coffee capsule flows into the cup (100). The coffeemaker is relatively small and portable.
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