The invention discloses a system for industrially treating silt residue soil. The system is mainly applicable to treating mud and sandy soil dug during urban construction and comprises an integral drum type mud and sand separating device, a mud and sand separating device and a mud treating portion. To-be-treated mud and to-be-treated sand can be primarily treated by the integral drum type mud and sand separating device; coarse sand and fine sand in the mud can be separated from each other by the mud and sand separating device; the mud without the sand further can be finely treated and then can be dehydrated by the mud treating portion to obtain dry mud for standby application. The system has the advantages that the to-be-treated mud and the to-be-treated sand are treated by the drum type mud and sand separating device to obtain dilute mud, sand and bulk material mixtures, and accordingly the waste soil transported by soil vehicles can be directly poured into the separating devices and can be quickly treated to obtain the dilute mud, sand and bulk material mixtures without being stacked; pottery products or porcelain products can be made of treated soil according to difference of soil components, accordingly, all waste can be truly completely utilized, waste materials can be recycled, and the system is a green and sustainable project.