The artificial blood vessel 10 includes an artificial blood vessel main body 12 and a carbon-like film 11 covering the inner wall of the artificial blood vessel main body 12. The water vapor adsorption isotherm of the inner wall system covered by the carbon-like film 11 shows a desorption hysteresis.人造血管10包括人造血管主體12和覆蓋人造血管主體12之內壁的類碳膜11。由類碳膜11覆蓋的內壁係水蒸氣吸附等溫線顯示脫附遲滯現象。