BEIJING — More than half of the proceeds from China’s lottery ticket sales in the name of promoting social welfare will be used for the old-age service, according to a government document.

Local governments have also been urged to improve their investment structure and increase support of old-age services, according to the document jointly issued by the National Development and Reform Commission, the Ministry of Civil Affairs and a national office for old-age care.

The government should provide guidance to social resources to support their participation, said the document on further promoting old-age care service.

Construction of professional and community-based old age services, such as nursing homes and day-care centers, is a priority in 2015, according to the document.