Glass fiber reinforced polyurethane profiles have gradually replaced traditional aluminum alloy profiles and are used in photovoltaic borders and door and window borders because of its environmental protection，insulation，heat preservation and excellent cost performance. The waterborne two-component polyurethane coating，which was prepared with hydroxyl acrylic dispersion and isocyanate curing agent as the main raw materials，combined with facial fillers and functional additives，exhibited excellent adhesion and resistance on the glass fiber reinforced polyurethane environmental profiles produced by various manufacturers，and met the performance requirements of profile coatings in various environments. In this paper，the effects of curing agent type，dispersion type，pH value，and other factors on the pot life and water resistance of waterborne two-component polyurethane coatings were discussed. The results showed that the waterborne two-component polyurethane coating was the most suitable coating system for environmentally friendly profiles.