The invention relates to the technical field of petroleum exploitation, and discloses a high-efficient wax-proof, scale-proof and liquid-increasing device. The high-efficient wax-proof, scale-proof and liquid-increasing device comprises a deep well, wherein an oil sucker rod is arranged in the deep well in a penetrating mode, a seven-split rod oil sucker rod wax-proof device is fixedly connected to the bottom end of the oil sucker rod, and a six-split rod oil sucker rod wax-proof device is fixedly connected to the bottom end of the seven-split rod oil sucker rod wax-proof device. Through the integration of high intensity magnetic, acoustic wave and eddy current technology, the high-efficiency wax-proof, scale-proof liquid-increasing device can perform the before pump and after pump treatment on well water-bearing crude oil. The unique design structure of the device can enable the flow rate, flow pattern, temperature, pressure, viscosity, the solubility of gas-liquid phase, the mixing degree of solid-liquid phase, the environment of crystal adsorption and growth, the microstructure of hydrocarbon components and so on of the produced liquid to produce a series of physical changes, the produced liquid is highly melted, so that the amount of wax is greatly reduced, the washing cycle is prolonged, and remarkable effects of wax-proof, scaling-proof, viscosity-proof and oil-increasingare achieved. A good wax-proof and scale-proof method is achieved.