The invention discloses an oscilloscope digit fluorescence display method. The method comprises the following steps: 1, presetting a control apparatus including an FPGA, an SRAM, an ARM chip and an LCD unit; 2, prestoring a color index table in the ARM chip including a transverse basic unit and a longitudinal basic unit, wherein the transverse basic unit and the longitudinal basic unit each comprises display point positions, channel numbers and color index values; 3, the FPGA acquiring electric signals, generating drawing data, transmitting the drawing data to the SRAM, the SRAM receiving the drawing data, and after a drawing data index table is generated and stored, the FPGA sending interruption signals to the ARM chip; 4, the ARM chip reading the drawing data index table, analyzing the drawing data index table, finding corresponding 24-bit color information and uploading the 24-bit color information to the LCD unit; and 5, the LCD unit displaying the 24-bit color information and prestoring and mapping display data into a memory of the ARM chip. Further disclosed is a control apparatus. According to the invention, only one SRAM is needed, the requirement for the FPGA is not high, and the cost is greatly decreased.