A slide rail assembly, comprising: a rail member having a hanging member; and a bracket comprising a first arm, a second arm, and a body extending and connected between the first arm and the second arm, the body having a positioning hole in which the hanging member of the rail member hangs, wherein the rail member comprises an upper wall, a lower wall, and a sidewall extending and connected between the upper wall and the lower wall, the upper wall, the lower wall, and the sidewall jointly defining a channel, and wherein the hanging member of the rail member is connected to the sidewall and located outside the channel; wherein the first arm of the bracket has a bent section and a supporting section extending from and connected to the bent section, the supporting section corresponding in position to the upper wall of the rail member; the second arm of the bracket has a bent section, a first supporting section, and a second supporting section extending substantially perpendicularly from the first supporting section, the second supporting section corresponding in position to the lower wall of the rail member; and the body of the bracket further has a first wall and a second wall, the first wall being defined by an upper hole wall of the positioning hole, the second wall being defined by a lower hole wall of the positioning hole; and characterized in that the hanging member of the rail member extends through the positioning hole of the bracket and hangs on the second wall of the bracket such that the supporting section of the first arm of the bracket is pressed against the upper wall of the rail member, the second supporting section of the second arm of the bracket is pressed against the lower wall of the rail member, and the body of the bracket is pressed against the sidewall of the rail member. a rail member having a hanging member; and a bracket comprising a first arm, a second arm, and a body extending and connected between the first arm and the second arm, the body having a positioning hole in which the hanging member of the rail member hangs, wherein the rail member comprises an upper wall, a lower wall, and a sidewall extending and connected between the upper wall and the lower wall, the upper wall, the lower wall, and the sidewall jointly defining a channel, and wherein the hanging member of the rail member is connected to the sidewall and located outside the channel; wherein the first arm of the bracket has a bent section and a supporting section extending from and connected to the bent section, the supporting section corresponding in position to the upper wall of the rail member; the second arm of the bracket has a bent section, a first supporting section, and a second supporting section extending substantially perpendicularly from the first supporting section, the second supporting section corresponding in position to the lower wall of the rail member; and the body of the bracket further has a first wall and a second wall, the first wall being defined by an upper hole wall of the positioning hole, the second wall being defined by a lower hole wall of the positioning hole; and characterized in that the hanging member of the rail member extends through the positioning hole of the bracket and hangs on the second wall of the bracket such that the supporting section of the first arm of the bracket is pressed against the upper wall of the rail member, the second supporting section of the second arm of the bracket is pressed against the lower wall of the rail member, and the body of the bracket is pressed against the sidewall of the rail member.