The invention relates to a multi-format multifunctional flat micronet element used for separating impurity, and relates to a manufacture technology of impurity separating equipment in sewage processing, and the multi-format multifunctional flat micronet element is suitable for separating sewage/sludge impurity during a sewage processing process. The multi-format multifunctional flat micronet element is composed of a micronet (1), an outlet pipe (2), edgings (3) and separator plates (6), an inner space of the micronet element is divided into several mutually independent filtering units (5) by the separator plates, an individual water outlet (4) is arranged on each filtering unit and is communciated with the outlet pipe, a long-strip micronet (8) is arranged at inner side of the water outlet, sewage is filtered and respectively passes through the water outlet for gravity flow, or an effluent is pumped through the outlet pipe (2). The micronet element has the advantages of simple structure, low cost, easy making and dismounting, good waterpower condition, large filtering flux and flexible elution mode, has good mechanical strength, and is suitable for impurity separating equipment for effluent from gravity or by a pump.