China was planning a series of celebrations and commemorations related to the war, but did not offer specific details.
She stressed that China was both a victor and a battlefield during the conflict. "We have made a huge contribution and sacrifice to ensure the victory in that war," she said.
The commemorations were intended "to evoke in all mankind their memory of history", she told reporters, and be "a way for us to safeguard the victory and the outcomes of the Second World War and the post-war order".
The report comes as Beijing has taken an increasingly hard line towards Tokyo amid disputes over territory and history.
Ties between Asia´s two biggest economies have been soured by a tense dispute over control of uninhabited islands in the East China Sea, administered by Japan but also claimed by China, and Beijing´s anger over a December 2013 visit by Prime Minister Shinzo Abe to Tokyo´s Yasukuni Shrine, which honours Japan´s war dead including convicted war criminals from World War II.
The countries have taken tentative steps to reduce tensions, with an agreement in November paving the way for the first formal bilateral meeting between Abe and Chinese President Xi Jinping on the sidelines of the APEC Asia-Pacific leaders´ forum in Beijing, but it took place in a glacial atmosphere.
Beijing, which uses memories of the war with Japan as a key tool to galvanise nationalist sentiment and deflect any dissatisfaction with Communist Party rule, remains wary of moves by Tokyo to raise its military profile and frequently says its neighbour must face its wartime history and not repeat it.
Victory over Japan, along with the economic development that has lifted hundreds of millions of Chinese out of poverty, are key pillars upon which the Party asserts its legitimacy.
China is also closely watching a statement on the anniversary of the war to be issued by Abe later this year to see if he alters the content of previous apologies for Japan´s conduct.
Abe said early this month that he would release a fresh statement on World War II this year, but would stand by previous apologies for wartime misdeeds.