Dew point generating device and dew point generating method

The invention discloses a dew point generating device and a dew point generating method, and the dew point generating device comprises a gas distribution mechanism which is used for storing standard gas to be measured; the filtering mechanism is used for filtering the standard gas to be detected; the constant-temperature box body is used for providing a constant temperature condition; the dry gas loop is used for generating dry gas with constant flow; the saturated moisture generating loop is used for generating saturated moisture; through cooperation of all the mechanisms, the display and control mechanism is used for controlling the temperature of the constant-temperature box body, meanwhile, gas with different dew points is generated through changes of the opening degrees of the dry gas loop and the saturated moisture generation loop, the dew point detection mechanism is used for detecting the dew points of the dew point gas, and the pressure control mechanism is used for controlling the pressure of target