To the non-linear problem between concentration and refraction index regarding temperture in the luquid food concentration measurement system, the artificial neural network modeling methods was applied and the new model was set up based on test data. 针对液浆类食品浓度检测系统中,浓度与折射率、温度之间的非线性关系问题,将人工神经网络技术应用于浓度测量的建模中,以实验数据为基础,建立了检测系统的数学模型。