The invention relates to an OpenGL-ES based dynamic progress bar drawing method, which comprises the following steps of 1, drawing a shader at a designated position, wherein the shader comprises a vertex shader and a fragment shader; 2, reading the texture picture, and storing the texture picture in a code in an array form; 3, carrying out texture binding on the read texture and a shader; 4, rendering the drawn picture on a screen, and refreshing the screen; 5, reading the real-time data; and 6, transforming the mapping matrix corresponding to the texture according to the read real-time data,and skipping to the step 3. Compared with a dynamic progress bar drawing method in the prior art, the dynamic progress bar drawing method has the advantages that the occupancy rate of a CPU and a GPUis remarkably reduced, and the processor resources are released; the development difficulty and the code quantity of the digital instrument panel UI in the embedded system are reduced, the developmentcost is reduced, and the development efficiency is improved; and compared with a default anti-aliasing function of the OpenGL-ES, the lines drawn by the method have no aliasing, and the effect is controllable.