The invention discloses a novel artificial hand flexible transmission control mechanism which comprises a planetary gear mechanism, a switching mechanism, an artificial hand and a hand clamp. A planetary gear of the planetary gear mechanism is a duplicate planetary gear, a sun gear is directly matched with an input shaft to serve as an input end, an inner gear is fixed onto a shell of the artificial hand, and a planetary frame serving as an output end is fixedly connected with a sleeve. An outer ring of the switching mechanism is directly fixedly connected with the sleeve through a screw to serve as an input end, a roller is matched with an output shaft to serve as an output end, a shifting fork is connected onto the switching mechanism through a guide post, a guide column slides along a sliding groove under the combined action of an arc push rod and a spring, the artificial hand is driven to flexibly open and close, and reliable, flexible and continuous switching is realized. The artificial hand flexible transmission control mechanism is driven by the duplicate planetary gear, the size is maximally reduced on the premise of meeting the requirement of transmission ratio, meshing overlap ratio is increased, efficiency is improved, and noise is reduced.