The invention relates to the technical field of the staining and in particular to an air-heating-type heating color-testing machine and a method. The air-heating-type heating color-testing machine comprises a box body, a rotation plate, a driving device, a dyeing cup, and an air heating device. The rotation plate is provided with a cup groove. The interior of the rotation plate is filled with a fluidity heat-conducting medium. The driving device is installed in a driving cavity and drives the rotation plate to be rotated by a rotation shaft. The air heating device comprises an air heater and an air channel. The air heater is installed in the air channel. The air outlet of the air channel is opposite to the rotation plate and is used for heating the heat-conducting medium in the rotation plate. According to the air-heating-type heating color-testing machine and the method, the fluidity heat-conducting medium is heated by hot air, the target temperature is unified by the fluidity heat-conducting medium so that the temperature of the dyeing cup is kept, the set target temperature point is achieved in the heat preservation of the dyeing cup, and a plurality of cloth samples is guaranteed to achieve the uniform color-testing standard, so the dyeing reproducibility is improved, the production cost is reduced and the experimental environment cannot be polluted.