The talks "improved mutual understanding and laid a foundation for resolving issues of mutual concern", the ministry said.
"These issues are much more hard to solve immediately but are, frankly, much more compelling to US companies", said Jake Parker, vice president for China operations of the US-China Business Council, which represents American companies that do business with China.
However, the two-day vice-ministerial talks were extended till Wednesday which China said reflected the seriousness of the negotiations.
Investors welcomed signs of optimism from the talks. Asian markets closed on a high note Wednesday on the expectation the two sides will reach an agreement.
The U.S. push for enforceable targets in a deal underscores the challenge of reaching a lasting truce.
Washington has been clamouring for an end to the alleged forced transfer - and even theft - of American technology, as well as steep government subsidies for Chinese companies.
Uncertainty over the outcome of China-U.S. trade talks cast a pall Thursday over Asian markets as both sides kept mum about what lies ahead. The council and other US business groups have pressed for a resolution to the trade hostilities between the world's two biggest economies.
The full year numbers will look somewhat different, partly because China has resumed purchases of USA soybeans and other goods. This meeting was previously unscheduled, signaling the two sides could be coming together on key issues. -China trade dispute. Apple Inc (AAPL.O) rattled global markets last week when it cut its sales outlook, blaming weak demand in China.
So far, the USA side has described the exchanges in a positive light.
"If the results of the talks are positive, it would be beneficial for both China and the United States and also a good news for the global economy", he added. Some disagreements remain on structural issues and they need to be addressed when more senior negotiators meet later on, according to Chinese officials involved in the discussions who asked not to be identified.
Vice Commerce Minister Wang Shouwen headed the vice ministerial level talks for China, though Vice Premier Liu He, a top economic adviser to Xi, made an appearance at a meeting on Monday. Prior to the meeting, China made a number of concessions to USA demands including temporarily cutting punitive tariffs on US -made cars, promising to open up its markets for more foreign investment, and drafting a law to prevent forced technology transfers.
Trump is increasingly eager to strike a deal with China soon in an effort to perk up financial markets that have slumped on concerns over the trade war, according to people familiar with internal White House deliberations. Over dinner in Argentina last month, Trump and Chinese president Xi Jinping agreed to a 90-day tariff truce so that negotiations could take place.
If talks continue to go well, a cabinet-level meeting is likely to happen before the end of the month.