Choice overload is a phenomenon in which consumers are faced with an overabundance of choices and information in modern society, leading to increased anxiety, fatigue and uncertainty. With the popularity of the Internet and the rise of social media, consumers have easy access to a wide variety of information and products. However, this also means that consumers need to spend more time and effort to sift through and compare different options. With the plethora of choices available, some consumers may feel overwhelmed, leading to decision-making difficulties and a regret mentality. Choice overload has a profound effect on consumers which exposing consumers to increased decision-making distress. This paper will classify the existing views from three aspects (impact of choice, consumer choice psychological mechanism and triggers of choice). On this basis, we give the merchants in the problem of the relevant solutions. For example, merchants can also take steps to help consumers cope with the effects of choice overload. They can provide clear and unambiguous product information, streamline the shopping process, and offer personalized recommendations and suggestions to reduce consumers' choice burden.