A sunshade includes: a support frame; and a canopy connected to the support frame and including a light-transmissible fabric sheet of undyed yarns and an opaque enamel coating coated on at least one side of the fabric sheet. A method of preparing a canopy includes: providing a light-transmissible fabric sheet of undyed yarns; coating an enamel composition on at least one side of the light-transmissible fabric sheet to form an opaque enamel coating on the light-transmissible fabric sheet; and drying the opaque enamel coating.