A container body (11) is provided with a squeeze operating portion (13a) between a shoulder portion (15) and a bottom portion (14), the squeeze operating portion including a squeeze face portion (16) opposed to a squeeze direction X, a pair of lateral support wall portions (17) arranged along the squeeze direction X at both side sections of the squeeze face portion (16), and inclined linking face portions (18) arranged as being inclined therebetween. When the squeeze face portion (16) is compressed to the squeeze direction x, the inclined linking face portions (18) expand distance between the pair of lateral support wall portions (17) at both sides as deforming along the squeeze face portion (16) from an inclined state against the squeeze face portion (16). The inclined linking face portions (18) are restricted so as not to be flipped in the squeeze direction (x) side after deformation completes as expansion force vanishes, so that constant quantity of content liquid is discharged.