More than 90 percent of Chinese netizens support government moves to crack down on unhealthy online content, a survey revealed.

Four in five Internet users believe cyberspace is sending mostly positive messages and people's behavior in the virtual world has improved, Beijing-based Horizon Research Consultancy Group said.

Victor Yuan, chairman of Horizon, said a series of crackdowns on cyber crimes, led by industry regulators, was the major reason for the high approval rate.

More than 85 percent of netizens said less pornographic information was available last year compared to 2013 while the amount of fake news reports and exaggerated advertisements also declined, said Yuan.

People still worry about privacy on the web, the survey showed. Virus attacks on computers and smartphones were among the top concerns of Internet users last year, said the company after questioning nearly 9,000 netizens in 45 major cities in January.

"The high approval rate suggests regulators have done something good to keep cyberspace clean, but the government still needs to do more to tackle issues such as information protection," Yuan said.