The FDI the country drew last month dropped 1.43 per cent from a year earlier to USD 8.33 billion, the Ministry's spokesman Shen Danyang said.
China, thus, has received USD 74.99 billion in the first eight months of this year, which is down by 3.4 per cent year- on-year, said Shen.
Investments from the debt-plagued European Union (EU) dropped 4.1 per cent year-on-year in the January-August period and that from the US was down 2.85 per cent.
In the first seven months of the year, investment from the EU, China's largest trade partner, dropped 2.7 per cent from a year ago.
But the investment from Japan rose 16.2 per cent from a year earlier, he said, adding that this compares to a 50 per cent increase in 2011.
But this was before the present crisis between the two countries over the disputed islands due to which many Japanese business in China were shut down as some of them came under attack.
Shen said the drop in investment from the United States was due to a lack of major projects in recent months and the trend may reverse at the end of the year.
Last month he attributed the dwindling investment inflows to both international and domestic economic factors, including the euro-zone's ongoing debt crisis, the US strategy of 'bringing manufacturing back home', China's strained land supplies and rising labour costs.
China approved the establishment of 754,130 foreign- funded companies in the first eight months, Shen said.
He noted that FDI into the service industry, excluding the real estate sector, rose 5.31 per cent year-on-year.
Boosted by growing domestic consumption, the retail sector rose 9. 76 per cent, he added.
Investment in the real estate sector was effectively controlled, falling 9.89 per cent in the January-August period compared with a year ago.
China has been striving to curb speculation in the real estate market in an effort to bring soaring home prices back to reasonable levels.
Premier Wen Jiabao has said the country will stick to its property tightening measures despite slowing economic growth.
The FDI data came after an array of other economic indicators for August were released, including the inflation rate, bank lending, exports and industrial output, which signalled mounting downward pressure on the national economy.
China's economy expanded at its lowest pace in more than three years in the second quarter, rising 7.6 per cent from a year earlier.
The country's equity market gained at mid-day, with the key Shanghai index up 0.17 per cent.