To provide a McKibben artificial muscle with improved durability of a terminal part. The McKibben artificial muscle (1) that expands and contracts by fluid pressure includes an elastic tube (10) and a braided tube (20). An elastic tube (10) consists of an elastic body formed in a hollow cylinder shape. The braided tube (20) is formed by bag-knitting with a predetermined knitting angle by twisting a filamentous body movably on the outer wall of the elastic tube (10). The braided tube (20) has a contraction region (21) and a restriction region (22). The shrink region (21) is knitted with a knitting angle such that the elastic tube (10) expands in the radial direction and contracts in the length direction to obtain a contraction force. The restricted region (22) is knitted with a knitting angle so as to suppress radial expansion in the vicinity of the terminal portion (11) of the elastic tube (10).
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