A Mckibben type actuator capable of generating at least the same contraction force as that of the related art with an application of a pressure lower than that required for those in the related art is provided. In an Mckibben type actuator 10 including an inner tube 11 configured to be expanded when being pressurized, and an outer sleeve 12 covering an outer peripheral surface of the inner tube 11 to limit an expansion of the inner tube 11, the outer sleeve 12 being configured to convert a radial expansion of the inner tube 11 to a longitudinal contraction of the inner tube 11, the inner tube 11 is formed of a resilient material having an expansion rate of at least 100%.
