A sunshade includes a roller, a screen wound on the roller, a torque unit, and a latch unit. The torque unit is mounted in the roller, extends outwardly of the roller, and is disposed for urging movement of the screen to a wound state. The latch unit includes a plug disposed in the roller and formed with a pin hole, a pin member, and a biasing member disposed in the roller. The pin member has a main portion (521) extending movably through the pin hole, a diameter-enlarged portion disposed in the roller and connected fixedly to the main portion, and a shoulder portion formed between the main portion and the diameter-enlarged portion and biased by the biasing member to abut resiliently against the plug.