Chinese Premier Li Keqiang traveled on Tuesday to Anhui, one of the hardest-hit provinces, where he met residents and encouraged officials to do everything they could to protect lives and livelihoods. Li was also to visit Hunan province.
Heavy rainfall had killed 93 people across 11 provinces and regions and left 19 missing in the past four days, state news agency Xinhua reported late on Monday.
More than a million people were forced to evacuate their homes and relocate, it said.
Weather forecasts predicted more downpours during what is traditionally China's flood season.
The Ministry of Civil Affairs said on its website 1.34 million hectares of cropland had been damaged and another 157,800 hectares had been destroyed by Monday morning, resulting in direct economic losses of 20.43 billion yuan.
It was not clear how that would affect the summer grain harvest, which was expected to reach 140 million tonnes this year.
The stormy weather also took a toll on farm animals.
In Anhui, the flooding killed some 7,100 hogs, 215 bulls and 5.14 million fowl, the China News Service reported.