Polyaspartic acid ester (PAE) polyurea coating is an elastic material prepared with amino acids ester and isocyanate components, which possesses characteristics of controllable gel time, high solid content, fewer solvent, corrosion resistance, green environmental protection. As a result, it has been widely used in numerous applications, including concrete protection, waterproofing and anti- corrosion, adhesives, floor coatings and others, with promising prospects for further advancements. This paper presented a review of the synthesis and application of PAE polyurea coating, detailing the synthesis principles, advantages, and disadvantages, elaborating on the effects of different components and modification methods on product properties. The applications and examples of PAE coating in different fields were also reviewed. Finally, further developments and applications of PAE polyurea coatings were prospected.