A recirculating air heating type laboratory color dyeing machine comprises a box body, a hollow rotating disc arranged in the box body and a rotating shaft connected with the rotating disc. A plurality of dyeing cup sleeves are evenly distributed on the outer peripheral face of the rotating disc, a dyeing cup is sleeved with each dyeing cup sleeve, a left end cover is arranged on the left end face of the rotating disc, a right end cover is arranged on the right end face of the rotating disc, one end of the rotating shaft penetrates through the left end cover to be fixedly connected with the right end cover, and the other end of the rotating shaft is connected with a transmission mechanism, a bearing is arranged on the rotating shaft, the left end cover is fixedly connected to an outer ring of the bearing, an air heater is arranged on the left side of the rotating disc, an air outlet of the air heater is connected with a hot air pipe, an air input hole is formed in the lower portion of the left end cover, one end of the hot air pipe penetrates into the air input hole and faces to the lateral wall of a corresponding dyeing cup sleeve, a hot air recovery device is arranged on the air heater, and an air inlet of the hot air recovery device is connected with a recovery pipe, a recovery hole is formed in the upper portion of the left end cover, and the other end of the recovery pipe penetrates through the recovery hole to be located in the rotary disc.