Until now, Vietnam experiences 20 years of “Doi moi” (reform). Vietnam has witnessed a plenty of optimistic achievements in economic performance. From a poor country, Vietnam has rapidly pushed itself to the group of middle – income country with 6,13% average GDP growth rate for period 2000 – 2014. The latest data shows GDP in 2014 reached 171,39 billion $, equivalent to 1740$ per capita (1). That is a miraculous success for Vietnam. Within the same last two decades, we also see significant change in economic structure. Vietnam is shifting from agriculture-based economy to modern economy, which relies upon industry and service more rather than agriculture. This is obviously seen in growing contribution of industry and service sections to GDP. Furthermore, industry is really in its heyday since most industries, especially petroleum, construction, garment and texture… have made considerable development. In recent years, the nation has been rising as a prominent name for agricultural export or attraction for foreign investment. However, never has environmental pollution worsened as in last period. Vietnam’s ecological biodiversity is threatened seriously and pollution in air, water and soil becomes a common phenomenon. Most reasons for this bleak situation come from economic activities or more specifically, from industrial expansion in the search for wealth. Moreover, all indicators in relation to environmental degradation increase at the same time as does economic growth. They remained unchanged in the past when economic growth was rather poor. This fact serves to prove a definite relationship between economic growth and environmental degradation. They seem to develop with similar pattern, so whether they are directly proportional to each other or follow different trend. Most of the researchers studied data of air pollution and income per capita. The most popular pollutants of concern are NO2, SO2, CO and dust. In Taiwan, research shows relationship between CO, NO2 and GDP per capita. According to the research, turning points of NO2 and CO, respectively, are 384.000 TWD (2) (equivalent to 12.800 USD in 1996) and 205.000 TWD (equivalent to 6.833 USD in 1996). These figures agreed with practical occurrence in Taiwan in 1990s. In 1990, Department of Environmental Protection released new regulation forcing installation of special equipment to reduce NO2 and CO emissions. Improvement in air pollution has been observed since the economy reached these turning points. Same result has been collected through researches in other areas. Turning point when environmental improvement happens often varies at high level within 3.000 – 1.5000 USD. In fact, cities with income per capita below 1.000 USD/year often suffer from heavy pollution and experience minor environmental improvement; while other cities with income per capita ranging from 3.000 to 10.000 USD/year experience significant environmental improvement, such as Thailand, Seoul, Mexico City. Cities with income per capita above 10.000 USD/year even attain high ambient quality. Big cities like London or Los Angeles succeeded in keeping the concentration of pollutants at standard level approved by WHO. Hanoi and Ho Chi Minh City are the two largest and most important economic centers...