A clothes drying machine includes a blade member (90) located in a hot air entrance space (100) formed between a hot air entrance duct (30) and an air entrance portion (22a) of a rear plate (22) of a drying tub (20). The blade member (90) includes a fixed portion (91) fixed to the flange (80), and a blade portion (92) vertically bent from the fixed portion (91) for generating an air current. The blade member (90) is installed outside the rear plate (22) of the drying tub (20), and is rotated together with the rotation of the drying tub (20) to generate a vertical air current, thereby dispersing foreign substances present in the lower portion of the hot air entrance space (100).