A drawer slide rail assembly, comprising: a first rail; a second rail movably connected to the first rail, the second rail comprising a pair of sidewalls and a main wall extending between the sidewalls; a movable member (28, 204, 304) movably mounted on the main wall of the second rail, the movable member (28, 204, 304) having a first hole (40, 206, 306); a supporting member (30, 202, 302), at least a portion of which passes through the first hole (40, 206, 306) and is connected to the second rail; and an adjusting member (32, 208, 308) comprising a cam (46, 210, 310) and a shaft (48, 212, 312) eccentrically connected to the cam (46, 210, 310), wherein at least a portion of the cam (46, 210, 310) presses against the movable member (28, 204, 304), and the shaft (48, 212, 312) passes through the movable member (28, 204, 304) and is connected to the second rail; wherein the first hole (40, 206, 306) of the movable member (28, 204, 304) is configured for movably connecting with the supporting member (30, 202, 302) so that the movable member (28, 204, 304) is adjustable relative to the supporting member (30, 202, 302), and hence upwardly or downwardly displaceable relative to the second rail, via the adjusting member (32, 208, 308), characterized in that the main wall of the second rail comprises a mounting portion; the movable member further comprises a mounting hole and a second hole, wherein the mounting hole corresponds to the mounting portion of the second rail, the first hole has two lateral sides and defines a width as a distance between the two lateral sides, the first hole further has a top side and a bottom side and defines a height as a distance between the top side and the bottom side, and the second hole has a hole wall; at least a portion of the cam of the adjusting member presses against the hole wall of the second hole of the movable member, and the shaft passes through the movable member via the second hole; the supporting member has a width and a height; and wherein the width of the supporting member is generally equal to the width of the first hole of the movable member, and the height of the supporting member is less than the height of the first hole of the movable member such that, when the adjusting member is rotated, the movable member is pushed by the cam and is thereby displaced upward or downward relative to the supporting member. a first rail; a second rail movably connected to the first rail, the second rail comprising a pair of sidewalls and a main wall extending between the sidewalls; a movable member (28, 204, 304) movably mounted on the main wall of the second rail, the movable member (28, 204, 304) having a first hole (40, 206, 306); a supporting member (30, 202, 302), at least a portion of which passes through the first hole (40, 206, 306) and is connected to the second rail; and an adjusting member (32, 208, 308) comprising a cam (46, 210, 310) and a shaft (48, 212, 312) eccentrically connected to the cam (46, 210, 310), wherein at least a portion of the cam (46, 210, 310) presses against the movable member (28, 204, 304), and the shaft (48, 212, 312) passes through the movable member (28, 204, 304) and is connected to the second rail;