The invention discloses a method for separating rare-earth fluorescent powder from electronic waste powder. The method comprises the following steps: 1, screening the electronic waste powder, thereby obtaining fine electronic waste particles; 2, conveying the fine electronic waste particles into a fine particle separation device for performing secondary separation, thereby obtaining the materials subjected to secondary separation; 3, performing powder slurry treatment on the materials subjected to secondary separation, allowing the materials to pass through a water sieve, and taking the screen underflow, thereby obtaining wet materials; and 4, sequentially carrying out washing, suction filtration, drying, grinding and screening the wet materials, thereby obtaining the rare-earth fluorescent powder of which the quality purity is not less than 98 percent. According to the method disclosed by the invention, the rare-earth fluorescent powder of which the quality purity is not less than 98 percent can be separated, the mass content of rare earth oxides in the rare-earth fluorescent powder of which the quality purity is not less than 98 percent is not less than 28 percent, the rare earth elements in the rare-earth fluorescent powder can be further conveniently separated by rare-earth purification enterprises, and the method is environmentally friendly, easy and convenient to operate and suitable for popularization and application.