With the popularization of internet, its application fields are spreading out every industry parts, especially there are great change in marketing areas by the internet. One of them is shopping mall. Assembly PC of old method being sale shopping mall is not consider in compatibility of each devices, because of using the assembling method of it. In this paper, in order to their has not specific knowledge on computer and consider of a compatibility to each devices, our implemented shopping mall that on the provided convenience by using the on-line customer, M implemented intelligent agent can advise compatibility of each devices using Fuzzy value.