Domestic May 1 to October 31, 2010 (a total of 184 days) - the 2010 World Expo (Expo 2010) is the largest in the history of the World Expo.

On May 7, 2010, the Ministry of Health announced the national notifiable infectious disease epidemic situation in March 2010. May 12, 2010 - China's second Disaster Prevention and Reduction Day to commemorate the second anniversary of the Wenchuan Earthquake.

Foreign May 2, 2010 Eurozone member states and the International Monetary Fund decided to jointly provide 110 billion euros in loans to Greece over the next three years to help Greece, which is in debt crisis, tide over the difficulties.

On May 3, 2010, Continental Airlines and United Airlines officially announced a merger worth US$3.15 billion.

The new company will be the largest airline in the United States and will be headquartered in Chicago.

On May 5, 2010, Indonesian Finance Minister Sri Mulyani Indrawati was appointed as the Chief Executive Officer of the World Bank.

On May 7, 2010, the ruling coalition led by Mauritius Prime Minister Navinchandra Ramgoolam won the parliamentary election held on the 5th and will be re-elected as Prime Minister.