Abstract: SAR real-time imaging systems have been applied in many fields, such as national defence The demands for real-time data visualization in these systems grow rapidly However, study in this field is not enough In this paper, a new real-time data visualization scheme for SAR real-time imaging systems is presented The information it provides in real-time is all-around, more intuitionistic, and more analyzable The abilities for information representation, bidirectional real-time interaction and online image analysis are more powerful The theory and algorithm of the thumbnail are also introduced, which is one of the important parts in the scheme The new scheme has been verified in practice