PURPOSE: To realize a bottle, which is excellent in resistance to stress-cracking and at the bottom of which no crack develops due to external factors such as temperature, moisture, drug, solvent, line lubricant and the like.

CONSTITUTION: In the saturated polyester bottle 1 concerned consisting of a mouth part 2, an upper shoulder part 3, a cylindrical part 4 and a self-supporting bottom part 5, at least the bottom part of the bottle is made of saturated polyester, which contains 0.1-0.6mol. part of multi-functional compound component unit to 100mol. part of dicarboxylic acid compound component unit and has intrinsic viscosity [η[ of 0.5-1.0dl/g.