A construction machine, comprising: an upper frame; an engine mounted on the upper frame via a plurality of engine mounts; a hydraulic pump coupled to the engine; an exhaust-gas after-treatment device carried by the upper frame; and a support cradle supporting the exhaust-gas after-treatment device at a position over the hydraulic pump, wherein: the upper frame includes a plurality of mount support portions (35A, 35B, 35C, 35D) to which the plurality of engine mounts are fixed, respectively, and a leg support portion; the support cradle includes a support stage on which the exhaust-gas after-treatment device is placed and a plurality of legs (47A, 47B, 47C) each extending downward from the support stage; the plurality of mount support portions (35A, 35B, 35C, 35D) include a space-defining mount support portion defining a horizontal space between the space-defining mount support portion and the hydraulic pump; and the plurality of legs (47A, 47B, 47C) include an in-space leg having a foot as a bottom end thereof and disposed in the space, the leg support portion being located so as to overlap the space in a plan view to allow the in-space leg to extend vertically in the space while the foot of the in-space leg is fixed to the leg support portion, characterized by an intake tube connected to the hydraulic pump for sucking hydraulic fluid from a hydraulic fluid tank mounted on the upper frame, wherein the leg support portion supports the foot of the in-space leg at a lower position, in a side view, than a position where the intake tube is disposed. an upper frame; an engine mounted on the upper frame via a plurality of engine mounts; a hydraulic pump coupled to the engine; an exhaust-gas after-treatment device carried by the upper frame; and a support cradle supporting the exhaust-gas after-treatment device at a position over the hydraulic pump, wherein: the upper frame includes a plurality of mount support portions (35A, 35B, 35C, 35D) to which the plurality of engine mounts are fixed, respectively, and a leg support portion; the support cradle includes a support stage on which the exhaust-gas after-treatment device is placed and a plurality of legs (47A, 47B, 47C) each extending downward from the support stage; the plurality of mount support portions (35A, 35B, 35C, 35D) include a space-defining mount support portion defining a horizontal space between the space-defining mount support portion and the hydraulic pump; and the plurality of legs (47A, 47B, 47C) include an in-space leg having a foot as a bottom end thereof and disposed in the space, the leg support portion being located so as to overlap the space in a plan view to allow the in-space leg to extend vertically in the space while the foot of the in-space leg is fixed to the leg support portion, the upper frame includes a plurality of mount support portions (35A, 35B, 35C, 35D) to which the plurality of engine mounts are fixed, respectively, and a leg support portion; the support cradle includes a support stage on which the exhaust-gas after-treatment device is placed and a plurality of legs (47A, 47B, 47C) each extending downward from the support stage; the plurality of mount support portions (35A, 35B, 35C, 35D) include a space-defining mount support portion defining a horizontal space between the space-defining mount support portion and the hydraulic pump; and the plurality of legs (47A, 47B, 47C) include an in-space leg having a foot as a bottom end thereof and disposed in the space, the leg support portion being located so as to overlap the space in a plan view to allow the in-space leg to extend vertically in the space while the foot of the in-space leg is fixed to the leg support portion, characterized by an intake tube connected to the hydraulic pump for sucking hydraulic fluid from a hydraulic fluid tank mounted on the upper frame, wherein the leg support portion supports the foot of the in-space leg at a lower position, in a side view, than a position where the intake tube is disposed.