The ultra large capacity digital micromirror spatial light modulator is designed using Xilinx high-performance FPGA and multiple parallel solid-state hard disks. It can store massive image data and maximize the advantages of DMD's fast flipping speed, which can meet the application requirements in fields such as maskless lithography, LDI, computer direct imaging, computational imaging, digital lithography, and high-resolution microscopy. The ultra large capacity digital micromirror spatial light modulator uses TI advanced optical control chips, designed for industrial and scientific research fields, supporting accurate internal and external synchronization signals, and being able to closely cooperate with cameras, motion platforms, etc.