A downer-type tobacco rapid heat-moisture treatment apparatus is characterized by comprising a downer main body unit, a moist air pretreatment unit connected with the downer main body unit, a dry air heating unit and an escape gas collecting unit, and a charging unit and a discharging unit respectively disposed at the upper end and the lower end of the downer main body unit; the downer main body unit comprises a stainless steel pipe; a plurality of gas medium inlets, gas medium outlets and heating furnaces are disposed at equal spacing along the stainless steel pipe; each heating furnace is provided with a temperature sensor and a high-temperature absolute-moisture-content detection external-connection member; and each sensor is connected with a temperature controller. By using the apparatus, under certain conditions of temperature, moisture content and gas mediums, quantitative analysis and evaluation about rapid drying can be performed on tobaccos, so that the data about water content and quality characteristic during rapid drying of the tobaccos can be acquired, and the data can be used in analysis of relative physical parameters and drying dynamic parameters, also the dried escape gas can be collected for chemical analysis.