China bought long-term Japanese bonds in March worth 234.5 billion yen ($2.9 billion), according to the latest statistics from Japan's Ministry of Finance.
This is China's biggest one-month purchase of Japanese bonds since January, 2005, the China Business News reported on Friday.
The enormous earthquake that hit east Japan in March has caused substantial damage. The country needs funds to rebuild in the wake of the catastrophe, Japan's Ministry of Finance said.
It is etimated that Japan's national debt will rise to 1,002 trillion yen ($12.376 trillion) by the end of the year. Total debt reached 924.3596 trillion yen ($11.417 trillion) at the end of 2010.
The Japanese national debt will be almost 200 percent of its GDP in 2011. But the international average debt ratio is below 60 percent, according to a report by Dai-ichi Life Insurance.
China has purchased Japanese bonds on a large scale since 2005, becoming the largest buyer of Japan's long-term bonds for six consecutive years.
While China also sold 415.7 billion yen ($2.9 billion) in short-terms notes after the March 11 earthquake and tsunami hit Japan.
日本財務省最新公布的統計數據顯示，中國在3月份淨買入日本長期國債價值2345億日元，約合29億美元。
據《第一財經日報》報導，這是中國在2005年1月以來最大規模的單月增持日本長期國債。
日本財務省表示，日本東部大地震造成國家嚴重損失，需要募集大筆資金進行災後重建工作。
預計至2011年底，日本國家債務總額將提升至約1002萬億日元。截至去年年末，日本國家債務總額為924.3596萬億日元。
日本第一生命保險研究機構的研究報告顯示，2011年日本的債務規模將達到其年度GDP的約200%。而國際社會公認的國家債務安全線與GDP的比率應為不超過60%。
據悉，中國是從2005年開始大量購買日本的長期國債並已經連續6年成為日本長期國債的最大購買方。
但同時，3月份日本東部發生大地震後，中國也拋售了日本短期國債4157億日元。