China was ranked as the best developing country for children in Asia, with its children experiencing the safest and happiest childhoods, according to a report released on Thursday, International Children Day.

The report - Stolen Childhoods - evaluated countries with a range of indicators related to childhood, from safety to health. Norway and Slovenia topped the index while Niger ranked last.

Of 172 countries, China ranked 41st overall, ahead of Vietnam (92), the Philippines (96), Myanmar (112) and India (116), according to the report by Save the Children - an international nongovernmental organization that promotes children's rights and supports children in developing countries.

According to the National Bureau of Statistics, the infant mortality rate in China dropped from 1.31 percent in 2010 to 0.81 percent in 2015.

By last year, the vaccination rate for children under 18 years old reached 99 percent, achieving the aim set by the Outline Program for Development of Chinese Women and Children (2011-20).

The number of children's welfare institutes grew from 335 in 2010 to 478 in 2015. During the same period, 130 centers for rescuing and protecting children and adolescents were built nationwide.

Over the past decade, China has established a series of laws and regulations promoting the development of children, including implementing the Improving Child Nutrition Project in rural areas and strengthening the protection system for children left behind by parents who leave rural areas to find work in cities.

Since 2010, the Ministry of Civil Affairs has launched pilot programs that provide support for child welfare directors in some residential areas to help children in need and prevent child abuse.

In June last year, the State Council, China's Cabinet, released a notice to make sure that every village in the country has a children's welfare director.