A forklift support leg, comprising: a support leg body, a driving wheel assembly, and a hinging plate, connected with the driving wheel assembly and hinged to the support leg body; wherein the hinging plate is perpendicularly disposed relative to a support direction of one or more driving wheels of the driving wheel assembly, or obliquely disposed relative to the support direction of the one or more driving wheels of the driving wheel assembly; wherein a first through hole is disposed in the hinging plate, a second through hole is disposed in the support leg body, the first through hole corresponds to the second through hole, and a hinging shaft is inserted through the first through hole and the second through hole; characterized in that, a first groove with an opening facing downward is disposed on the support leg body; a second groove with an opening facing upward is disposed proximate to a hinging position on an upper surface of the hinging plate, and the second groove corresponds to the first groove; wherein a spring is disposed in the second groove, a top end of the spring is abutted against a lower surface of the first groove, and a bottom end of the spring is abutted against an upper surface of the second groove; an abutting position where the bottom end of the spring is abutted against on the upper surface of the second groove is located at a side of the hinging shaft proximate to the driving wheel assembly; or, a torsional spring is disposed on the hinging shaft, an end of the torsional spring is abutted against the support leg body, and other end is abutted against the hinging plate from above the hinging plate; wherein an abutting position of the torsional spring on the hinging plate is located at a side of the hinging shaft proximate to the driving wheel assembly. a support leg body, a driving wheel assembly, and a hinging plate, connected with the driving wheel assembly and hinged to the support leg body; wherein the hinging plate is perpendicularly disposed relative to a support direction of one or more driving wheels of the driving wheel assembly, or obliquely disposed relative to the support direction of the one or more driving wheels of the driving wheel assembly; wherein a first through hole is disposed in the hinging plate, a second through hole is disposed in the support leg body, the first through hole corresponds to the second through hole, and a hinging shaft is inserted through the first through hole and the second through hole; characterized in that, a first groove with an opening facing downward is disposed on the support leg body; a second groove with an opening facing upward is disposed proximate to a hinging position on an upper surface of the hinging plate, and the second groove corresponds to the first groove; wherein a spring is disposed in the second groove, a top end of the spring is abutted against a lower surface of the first groove, and a bottom end of the spring is abutted against an upper surface of the second groove; an abutting position where the bottom end of the spring is abutted against on the upper surface of the second groove is located at a side of the hinging shaft proximate to the driving wheel assembly; or, a torsional spring is disposed on the hinging shaft, an end of the torsional spring is abutted against the support leg body, and other end is abutted against the hinging plate from above the hinging plate; wherein an abutting position of the torsional spring on the hinging plate is located at a side of the hinging shaft proximate to the driving wheel assembly.