Animation ads, or cartoon ads, mean the ads in cartoon method. One kind of cartoon ads is call 2-D ad, which is used in depicting 2-D world and simple 3-D world. DREAM is an 2-D, inspirational cartoon ad made by Flash. This article firstly introduces the classification and relative concept of ads. Following this, the cartoon culture and the advantage of cartoon ads are analiysed. Finally, the process in producing the cartoon ad DREAM will be presented to explain how to make a short cartoon ad.