The rotating chairmanship was handed over from Indonesia to Cambodia last year. It is the first time that Cambodia is hosting the Asean summit and related meetings, which are scheduled for March 30-April 4.
The summit will mark the 45th anniversary of the establishment of the regional bloc, Thai News Agency reported.
The Cambodian foreign ministry said the leaders are expected to adopt documents, including the Phnom Penh Declaration on Asean: One Community, One Destiny; the Asean Leaders' Declaration on a Drug Free Asean 2015, and a Concept Paper on the Global Movement of Moderates.
In order to celebrate the regional's body's 45th anniversary, the leaders will also issue a “Chairman's Statement on the 45th anniversary of Asean: The Way Forward”.
The 10 national leaders will also follow up the development of the Asean Community, which is to be implemented in 2015 and exchange ideas on a regional agenda that will be mutually beneficial.
The Thai prime minister will propose various initiatives related to disaster management, the atmospheric haze problem, Asean Connectivity and upgrading suppression of the trade in illicit drugs.
Yingluck will also attend the 6th Indonesia-Malaysia-Thailand Growth Triangle (IMT-GT) to update and follow up the action plan of the past five years. The group will discuss the next five-year action plan (2012-2016) for continued development.