Mask

The invention relates to a mask. The mask is provided with a supporting annular edge and at least one supporting box wall, wherein the cavity box assembly is provided with a first cavity and is in a three-dimensional shape; the cavity box body assembly comprises a second cavity which is communicated with the cavity and defined by at least one far-end flat box wall and/or a part of at least one supporting box wall. The mask is provided with the large-capacity cavity, the shape can be kept, sealing is good, and machining is convenient. 本发明涉及一种口罩，具有一个支撑环边和至少一个支撑箱壁的带有第一空腔的三维形状的空腔箱体组件；所述空腔箱体组件包括与空腔连通的由至少一个远端平整箱壁和/或至少一个支撑箱壁的一部分围成的第二空腔。本发明的口罩具有大容量空腔、且能保持形状、密封良好、加工方便。