According to the Criminal Law, those who kidnap more than three children could face a minimum of five years in prison to the maximum of a death sentence.

The top court also announced that two human traffickers had been executed on Monday.

Lu Jincheng, a 25-year-old farmer in Southeast China's Fujian province, was convicted of trafficking an 8-month-old boy in 2008 after killing his mother and 75-year-old grandmother. He later sold the boy for 37,000 yuan ($5,433).

He Cong, a 36-year-old farmer, was convicted of kidnapping 12 children, aged 1 to 7, from 2006 to 2007 in Southwest China's Guizhou province and selling them in Central China's Henan province.

Sun said the court will insist that severe penalties be imposed on those who profit from selling women and children, while it is inclined to be more lenient toward those who purchase them, if the kidnap victims have been treated kindly.

According to the law, those who purchased kidnap victims and cooperate with the authorities by returning the victims to their families may not be punished, while those who do not cooperate could face possible sentences of three years in prison.

Xue Shulan, a judge in the SPC, attributed the rising number of human trafficking cases to the demand of a large market, especially in rural areas where people who have a preference for males are willing to spend a lot of money to buy a boy.

About 30,000 to 60,000 children are reported missing every year in China, but it is difficult to estimate how many are actually cases of human trafficking, the Ministry of Public Security said.