Abstract: We developed a VC＋＋ platform based seawater nutrient salt test software system. We also constructed the data structure of its system software. It could reconfigure the test process based on the specific test requirement of each nutrient salt, so the system could dynamically perform test process. Experimental results show that the system can improve adaptability,and make the test process more flexible.

Key words: data structure, nutrient salt, Visual C++