Water receiving box structure and constant temperature and humidity equipment

The utility model provides a water receiving box structure and constant-temperature and constant-humidity equipment, which are used for solving the problems of unstable connection between a water guide pipe and a water storage box of the constant-temperature and constant-humidity equipment and cold air leakage. Comprising a box body used for collecting liquid, the box body is installed in the constant-temperature and constant-humidity equipment, an overflow piece is arranged in the box body and connected with a water guide pipe of the constant-temperature and constant-humidity equipment, a check block used for lifting a water outlet of the water guide pipe is arranged at the bottom of the overflow piece, and the diameter of the overflow piece is slightly larger than the inner diameter of the water guide pipe. The overflow piece is additionally arranged on the water receiving box, on one hand, after condensate water in the water receiving box makes contact with an outlet of the water guide pipe, communication