The country's firms invested 53.3 billion yuan (USD 7.7 billion) abroad in January, Ministry of Commerce spokesman Sun Jiwen said in a statement posted on its website.
Foreign direct investment into China also fell 9.2 per cent on-year in the month, he said.
The government last year blasted "irrational" spending and began introducing tightened restrictions on overseas spending amid concerns over capital flight, reckless investment, slowing domestic economic growth and a weakening yuan currency.
Overseas direct investment surged 44 per cent to 1.13 trillion yuan (now USD 165 billion) in 2016, according to government data.
Property-to-entertainment conglomerate Wanda Group bought Hollywood studio Legendary for USD 3.5 billion, appliance giant Midea took over leading German robotics firm Kuka for USD 5 billion, and insurer-turned-hotelier Anbang paid USD 6.5 billion for 16 luxury properties from hedge fund Blackstone, among other deals.
The tightening marked an about-face after authorities had long urged private and state-owned enterprises to "go abroad" to buy foreign brands and resources in search of better returns and technological know-how.