Provided a polylactic acid bottle having a vacuum-evaporated film on an inner surface of a bottle wall, effectively preventing the thermal deformation of the bottle at the time of forming the film and exhibiting excellent barrier property against oxygen and water. The bottle comprises the bottle wall made from a biodegradable resin and a vacuum-evaporated film on the inner surface of the wall by a plasma CVD method, and is characterized in that said vapor-evaporated film exhibits hydrocarbon peaks stemming from CH, CH2 and CH3 in a region of a wave number of 3200 to 2600 cm-1 as measured by FT-IR spectroscopy, and the proportion of CH2 and sum of CH, CH2 and CH3, as well as the proportion of CH3 and the sum of CH, CH2 and CH3, which are calculated from the hydrocarbon peaks, being 35% or lower and 40% or higher respectively.