The Ship has become an important source of air pollution in China’s coastal areas. The joint prevention and control work is needed to be done on the regional level for the lack of measures. Developed countries have been gradually control the air pollution from ships by establishing emission control area，transferring low sulfur oil，constructing shore power and formulating ship emission standard. However，the ship air pollution prevention work have not yet started in the Yangtze River Delta region and the country as well. Problems lie in low-quality fuel，lack of emission standards，and slow speed of shore power construction while the regional cooperation mechanism has not been established. In order to further improve the air quality in Yangtze River Delta Region，ship air pollution control should be promoted as soon as possible，the joint prevention measures of which include emission control area，ship air emission standard，shore power construction and ship supervision.