A three-channel heat sink based on a tri-continuous mesoporous silica structure, comprising a plurality of three-channel porous units (1) stacked on one another, wherein each of the three-channel porous units (1) comprises a first channel (21), a second channel (22) and a third channel (23) which do not communicate with one another, wherein each of the first channel (21), the second channel (22) and the third channel (23) comprises at least one flow path (11), wherein the flow path (11) comprises an upper horizontal section (111), a vertical section (112), and a lower horizontal section (113);
- and wherein an outlet end of the upper horizontal section (111) is connected to an inlet end of the vertical section (112), an outlet end of the vertical section (112) is connected to an inlet end of the lower horizontal section (113), and the upper horizontal section (111), the vertical section (112) and the lower horizontal section (113) form a Z-shaped structure;
- wherein each of the three-channel porous units (1) comprises five flow paths (11),
- wherein the five flow paths are arranged in two layers in a vertical direction, and
- wherein the upper horizontal section (111) and the lower horizontal section (113) of each of the five flow paths (11) are located in an upper layer and a lower layer in the vertical direction, respectively;
- wherein, when viewed in the vertical direction, four of the five flow paths (11) are enclosed to form a parallelogram pattern, wherein, in the upper layer, upper horizontal sections (111) of two adjacent flow paths (11) intersect and communicate with each other to form the first channel (21) and in the lower layer, lower horizontal sections (113) of the two adjacent flow paths (11) intersect and communicate with each other to form the second channel (22);
- and wherein a remaining one of the five flow paths (11) is located at a diagonal position of the parallelogram pattern to independently form the third channel (23);
- and
- wherein a body formed by the three-channel porous units (1) stacked on one another is internally provided with three medium flow paths that intersect, contact, and do not communicate with one another.