The supplies would be carried to Kaohsiung in the south of the island.
Wang Yi, director of the Taiwan Work Office of the Communist Party of China (CPC) Central Committee, said at the airport Tuesday that the mainland would try all out to provide the relief Taiwan people needed now and for future reconstruction work.
Wang Yi also expressed his deep sympathy to the Taiwanese on their losses in the worst typhoon disaster to hit the island in the past 50 years.
Typhoon Morakot killed at least 127 people, not including the more than 500 villagers believed to have been buried alive in mudslides.
"The mainlanders care a lot about the situation of their compatriots," Wang said.
He said the Taiwan Work Office and the Association for Relations Across the Taiwan Straits (ARATS) had conveyed their concern for the island immediately after the disaster, and called for the swift provision of aid from across the nation.
After reviewing a list of required aid materials the island put forward, the mainland had tried to gather them together quickly and prepared to provide emergency help for the island, Wang said.
In the past week, as the death toll in Taiwan climbed, the mainland made generous donations, not only from organizations but also from individuals.
On Monday, 100 prefabricated houses were flown from southern Shenzhen city to Kaohsiung. The Shenzhen municipal government said the remaining 900 prefabricated houses would be constructed as quickly as possible.
The Association for Relations Across the Taiwan Straits (ARATS) donated 106 million yuan (about 15.5 million U.S. dollars) and 5 million Hong Kong dollars (about 645,000 U.S. dollars).
The Red Cross of China donated 6.85 million yuan on Monday, bringing its total aid to typhoon-hit areas to 21.85 million yuan.
A fund-raising gala organized by Shanghai TV stations on Friday night collected more than 13 million yuan on the night alone.
As of Tuesday, the Shanghai Zhenhua Heavy Industry Co. had raised about 20 million yuan from its staff and business branches.