Shang Fulin, chairman of China Securities Regulatory Commission (CSRC), on Friday urged securities and futures regulators and brokerages to conduct effective education on domestic investors.

Shang's remarks came after almost doubling of the benchmark Shanghai Composite Index since the beginning of the year despite a 2.16-percent slump on Friday.

"The regulators and dealers should help investors raise their risk awareness and clamp down on market irregularities," Shang said at a meeting on risk education on investors held in Beijing.

Fan Fuchun, CSRC's vice chairman, said," the emphasis of risk education should be placed on vast majority of small and medium-sized investors and investors with low incomes to make them have a clear understanding of current market situation.

"Risks are increasing with quick market expansion, new forms of market irregularities and weak risk awareness of many investors," Shang added.