Provided are a fiber sheet and a bandage in which same is used. Said sheet has a stress relaxation rate of 85% or less defined according to the formula: stress relaxation rate (%) = (five minute stress elongation S5/initial elongation stress S0) 100 where initial elongation stress S0 N/50 mm is the elongation stress immediately after elongation at an elongation of 50% in a first direction within a plane and the five minute stress elongation S5 N/50mm is the elongation stress when elongated for five minutes at an elongation of 50% in the first direction.