The invention discloses a method for adsorbing antibiotics in water through a multi-walled carbon nanotube/metal organic framework composite material. The method comprises mixing a multi-walled carbonnanotube/metal organic framework composite material and antibiotic waste water and carrying out oscillating adsorption for treatment on the antibiotic waste water, wherein the multi-walled carbon nanotube/metal organic framework composite material contains multi-walled carbon nanotubes and MIL-53(Fe). The method can efficiently adsorb antibiotics in waste water, utilizes simple treatment processes and simple adsorption equipment, is easy to operate, realizes a low cost, a large adsorption capacity, a fast adsorption rate and a high repeating utilization factor, is clean, prevents pollution, can be widely used, can efficiently remove the antibiotics in water and has high application values and commercial values.