Terahertz imaging technology has shown great potential in solution mixing processes due to its high penetration and non-destructive testing capabilities. However, existing technologies face challenges in achieving high sensitivity and fast imaging speeds. This study presents a high imaging system based on Rydberg atoms, exploiting their sensitivity to electromagnetic fields for efficient terahertz-to-optical signal conversion. The system enables full-field imaging of solution mixing processes at high frame rates, significantly enhancing image capture speed and resolution. Experimental results demonstrate that The system can achieve an imaging resolution close to 1 mm at a 0.55 Terahertz frequency and can clearly distinguish the mixing process of water and alcohol, showcasing its high precision in imaging dynamic liquid diffusion This technology holds great promise for applications in industrial solution mixing and chemical reaction monitoring, paving the way for broader adoption of terahertz imaging systems.