Street food can be found in every part of the world, particularly in crowed cities. Look into the actual state; many people are eating street food on a regular basis and even seeing it as an indispensable part of daily life. For instant, basing on the survey did by the Nutrition Center of Ho Chi Minh city, there are over 95.5% people are utilizing street food; 51% eating street food every day and 82% using street food for breakfast (Nguyen 2003).On the other hand, thanks to the rising prevalence of street food, the street food trade also tends to be more common. There is a big number of people who are earning their life by selling street food. Specifically, Alizon (1996) mentions an estimation of EPOC indicating that in Bogor, there are approximately 18,000 vendors in a city of about 250,000; or in a smaller area like Hoankiem district, there are over 2,000 vendors (Lam 2008). With a numerous people taking part in, street food trade naturally brings a giant profit. Henrilyto (2012) states that the annual sale from selling food on the street in Borgor, Indonesia amount to $67 million and it is 2.2 billion in Malaysia. Obviously, street food is gradually developing and showing its impacts on aspects of our life.