The thermal IR images of camouflage net were recorded at different time in a day. The influence of sunshine on IR pattern of the camouflage net was discussed. The solar energy absorptivity of the camouflage cloth of the nets influences the IR pattern under sunshine greatly, and the influence even exceeds that of thermal IR emissivity. The dark green cloth of camouflage net, whose thermal IR emissivity is lower than that of khaki cloth, absorbs more solar energy. When the emissivity difference between khaki cloth and dark green cloth is less than 0.11, the apparent temperature of dark green cloth may be equal to or higher than that of khaki cloth in the sunshine. When the emissivity difference between khaki cloth and dark green cloth reaches 0.27, the apparent temperature of dark green cloth is lower than that of khaki cloth in the burning summer sunlight.