The invention discloses a rotary drum dryer for flexible articles. The rotary drum dryer for flexible articles comprises a fixed rack and a rotary rack which is arranged on the upper side of the fixed rack, wherein the front part of the rotary rack is hinged to the fixed rack and the rear part of the rotary rack can swing up and down; and a rotary drum device, a power device which drives the rotary drum device and an exhaust fan are arranged on the rotary rack. In order to overcome the shortcomings in the prior art, the invention provides the special rotary drum dryer for flexible articles such as cotton products and rubber. As hot wind in adrying oven cavity flows in a diffused manner and is uniformly distributed, the rotary drum dryer ensures that materials can be uniformly and quickly dried, so that the drying efficiency is improved and the heat utilization rate of the rotary drum dryer is high.