Aiming at the constraints of time and venue in FPGA-related experimental teaching, as well as the difficulty of collecting process data on teaching and learning in traditional offline on-site board-level experiments, this paper presents the design and implementation of a remote laboratory system for digital-circuit instruction based on the Unisoc FPGA platform. By adopting a hardware–software co-design philosophy, the system not only supports remote download/update via a emulated JTAG interface, bit-stream flashing, waveform capture and signal generation, but also extends to a dual-channel arbitrary waveform generator and spectrum analyzer. Integrating remote cameras and digital-twin technology panels, the system streams real-time experimental phenomena over Ethernet, enables remote interaction and continuous monitoring of experiment status, and thus establishes an immersive and scalable remote laboratory environment.