Capsule piercing mechanism of capsule coffee machine

The utility model discloses a capsule piercing mechanism of a capsule coffee machine. The capsule piercing mechanism comprises a main body, wherein the main body is vertically arranged, and the upper end of the main body is provided with a pointed corner; the capsule piercing mechanism is characterized in that a flow guiding cavity is formed in the main body, the upper end of the main body is solid, and a flow guiding opening which is communicated with the flow guiding cavity is formed in the side surface of the main body. The capsule piercing mechanism disclosed by the utility model has the advantages that since the upper end of the main body is solid, liquid coffee can flow from the flow guiding opening in the side surface of the main body which is positioned in a coffee capsule into the flow guiding cavity when the coffee capsule is pierced by the capsule piercing mechanism, the liquid coffee can then flow out from the flow guiding opening which is positioned outside the coffee capsule or the flow guiding cavity which is communicated with the lower end of the main body, the situation that a filter screen is broken as the filter screen in the coffee capsule is sucked into the flow guiding cavity by water pressure is prevented from happening, meanwhile, the situation that the flow guiding cavity is blocked as the filter screen is broken is avoided, and the smooth flowing out of the liquid coffee is ensured; in addition, the capsule piercing mechanism is simple in structure, low in cost and very convenient to disassemble and assemble.