The utility model relates to a lever suspension clamping device which consists of a bracket, a eccentric wheel and a hinge pin, wherein zigzag-shaped stripe is formed on one side facing to the eccentric wheel, of the bracket; the eccentric wheel is fixed inside a hole of a side plate of the bracket by virtue of the hinge pin; the hinge pin is fixed inside a pin hole of the side plate of the bracket; the eccentric wheel can rotate around the hinge pin; the surface of the eccentric wheel is subjected to knurling treatment or liner rubber treatment, thereby increasing the friction of a clamped rod piece. When the friction to the rod piece under the action of a clamping force is greater than the gravity of the rod piece, a self-locked rod piece is solidly fixed on the device, and thus a reliable clamping and fixing function is achieved. The device is simple to operate, safe and reliable, and applicable to a clamping device of which the rod piece is vertically suspended or hoisted. In the mechanical machining industry, the device can be used as a clamping device for workpiceses such as rods, bars and sticks, and in the petroleum industry, the device can be used as a special hoisting clamp of an oil sucking rod, and can be used as a mop or a suspension device of a rod piece tool and the like in daily life.