In order to understand the characteristics and properties of current domestic liquid toilet cleaner products,11 different brands of mainstream liquid toilet cleaner were screened and their declared physical and chemical indexes and decontaminating properties were analyzed.Through this analysis,it is understood that commercially available products mainly focus on concepts such as"strong decontamination","sterilization/anti-bacteria","deodorization",etc.The active substance content is generally between 1-3%,and the formula is still mainly based on the hydrochloric acid system.The decontamination performance of hydrochloric acid system is better than that of the oxalic acid system,but not as good as the alkaline system containing chlorine.