The invention discloses a bionic tadpole device based on IPMC driving and a driving method thereof. The bionic tadpole device is characterized in that a storing plate used for storing an IPMC driver is arranged on the maximum section of a cavity inside a head shell, a battery pack is stored in a space below the storing plate, and a button switch closely attached to the lower portion of the batterypack is arranged. A switch through hole is formed in the position, connected with the shell, of the bottom of the battery pack, and the button switch stretches outwards from the switch through hole.The junction of an IPMC driving material and a tail is connected and sealed by silica gel. The IPMC driver and the IPMC driving material at the tail are connected at one end in the shell through an externally-connected electrode sheet. According to the deformation characteristics of the IPMC material, an intelligent IPMC material is adopted as the driving material; the controller adopts a controldevice mainly provided with a single chip microcomputer, and the frequency and voltage can be adjusted; and the bionic tadpole device is simple in structure, convenient in power supplying and small insize, the research of bionics is extended, and meanwhile, deeper research and promotion are made for adopting the IPMC material as the driving material of a bionic robot.