Water-vapor separation box for water purifier and water purifier

The water-vapor separation box comprises a box body and a top cover arranged on the box body in a covering mode, a flow collecting cavity and a separation cavity are formed in the box body, the box body is provided with a water inlet communicated with the flow collecting cavity and a water outlet communicated with the separation cavity, the water-vapor separation box is further provided with a first exhaust port and a second exhaust port, and the first exhaust port and the second exhaust port are communicated with the separation cavity. One end of the first exhaust port is communicated with the separation cavity, the other end is communicated with the outside atmosphere, one end of the second exhaust port is communicated with the separation cavity, and the other end is communicated with a pure water tank of the water purifier. The water purifier comprises a purifier body and a pure water tank, wherein the purifier body is provided with the water-vapor separation box. The water-vapor separation box is provided