The blue-chip CSI300 index rose 0.5%, to 3,710.54, while the Shanghai Composite index rose 0.3% to 2,823.82.
For the week, CSI300 was up 2.1%, while SSEC gained 1.8%.
China's state planner said on Friday it will roll out a plan to boost disposable income this year and in 2020 to spur consumption as the economy slows, but it gave few details.
Leading a rise in the market, the CSI300 consumer staples index rose 1.3% on Friday.
The strong gains also followed a raft of solid earnings reports by leading brands, including Tsingtao Brewery and Foshan Haitian Flavouring. However, analysts expressed caution given various uncertainties at this moment.
The A-share market could continue to be range-bound until any signs of strong positive signals, amid global recession fears and lingering Sino-US trade tensions, Shanxi Securities said in a report.
US President Donald Trump said on Thursday that US and Chinese negotiators were holding "productive" trade talks and expected them to meet in September despite US tariffs on over $125 billion worth of Chinese imports taking effect Sept. 1.
Nonetheless, China on Thursday vowed to counter the latest US tariffs on $300 billion of Chinese goods but called on the United States to meet it halfway on a potential trade deal.
Around the region, MSCI's Asia ex-Japan stock index was firmer by 0.38%, while Japan's Nikkei index closed up 0.06%.
At 07:15 GMT, the yuan was quoted at 7.045 per US dollar, 0.17% weaker than the previous close of 7.0333.
The biggest percentage gainers in the main Shanghai Composite index were DuZhe Publishing & Media Co Ltd up 10.06%, followed by ZheJiang JiHua Group Co Ltd gaining 10.05% and HPGC Renmintongtai Pharmaceutical Corp up by 10.03%.
The biggest percentage losers in the Shanghai index were Junhe Pumps Holding Co Ltd down 10.02%, followed by Grace Fabric Technology Co Ltd losing 7.94% and Olympic Circuit Technology Co Ltd down by 5.34%.