A floor frame comprising: at least two spaced longitudinal support strips each having an elongate strip body extending in a longitudinal direction of the floor frame, with each longitudinal support strip including longitudinal upper and lower portions (22, 24) spaced in a vertical direction perpendicular to the longitudinal direction and a pair of longitudinal side walls spaced in a lateral direction perpendicular to the longitudinal and vertical directions (X, Z); and at least one lateral support strip having an elongate strip body extending in the lateral direction, with the lateral support strip including two ends spaced in the lateral direction, with the lateral support strip further including lateral upper and lower portions (42, 44) spaced in the vertical direction and a pair of lateral side walls spaced in the longitudinal direction; characterized in that a shoulder extends outward in the lateral direction from at least one of the pair of longitudinal side walls and is located between the longitudinal upper and lower portions (22, 24), with two shoulders of the two longitudinal support strips being opposite to each other, wherein the two ends of the lateral support strip are respectively placed on the two opposite shoulders of the two longitudinal support strips, wherein at least one longitudinal side wall of the longitudinal support strip is provided with a water collection trough extending in the longitudinal direction and located outside of the shoulder, and at least one lateral side wall of the lateral support strip is provided with a water drain extending in the lateral direction and located outside of the lateral side wall. at least two spaced longitudinal support strips each having an elongate strip body extending in a longitudinal direction of the floor frame, with each longitudinal support strip including longitudinal upper and lower portions (22, 24) spaced in a vertical direction perpendicular to the longitudinal direction and a pair of longitudinal side walls spaced in a lateral direction perpendicular to the longitudinal and vertical directions (X, Z); and at least one lateral support strip having an elongate strip body extending in the lateral direction, with the lateral support strip including two ends spaced in the lateral direction, with the lateral support strip further including lateral upper and lower portions (42, 44) spaced in the vertical direction and a pair of lateral side walls spaced in the longitudinal direction; characterized in that a shoulder extends outward in the lateral direction from at least one of the pair of longitudinal side walls and is located between the longitudinal upper and lower portions (22, 24), with two shoulders of the two longitudinal support strips being opposite to each other, wherein the two ends of the lateral support strip are respectively placed on the two opposite shoulders of the two longitudinal support strips, wherein at least one longitudinal side wall of the longitudinal support strip is provided with a water collection trough extending in the longitudinal direction and located outside of the shoulder, and at least one lateral side wall of the lateral support strip is provided with a water drain extending in the lateral direction and located outside of the lateral side wall.