To promote image color appearance model, it sorted research findings for neon color effect and put forward a further research topic. It firstly expounded the phenomenon and mechanism of neon color spreading effect by introducing two typical models (embedded model and Ehrenstein model). Then it outlined main research achievements about neon color spreading effect in history, i.e. the law of the influence of inducing factors on the strength of neon effect. The inducing factors include luminance combination, wave length combination, retina illuminance and model structure. The paper sorts and summarizes the findings about the influence law.