The invention discloses a high-temperature superconducting material and a method of preparing the high-temperature superconducting material. The high-temperature superconducting material is prepared from yttrium, aluminum, nickel, lithium, zinc, barium and boron; and the preparation method comprises the steps of (1) preparing a nitrate mixed solution; (2) adding citric acid to the nitrate mixed solution; (3) heating and concentrating the mixed solution obtained in the step (2) until complete combustion of gel and forming powder; (4) grinding the powder evenly; (5) putting the ground powder into a high-temperature furnace for calcining and cooling to room temperature; and (6) carrying out a photoresist removal process, which comprises the following steps of a softening process, a dry degumming process and a wet degumming process, and taking out a product to obtain the superconducting material. Preparation is carried out by adopting a sol-gel method and a high-temperature calcination method to form the superconducting material with uniform texture, so that the defect of low critical temperature of an existing superconducting material is avoided, and the prepared superconducting material with relatively high critical temperature has the superconducting characteristic under the condition of relatively high temperature.