This came in remarks he made during the swearing-in ceremony for Securities and Exchange Commission Chairman Paul Atkins at the White House.
Trump said that China would eventually have to reach a customs agreement with the United States, expressing his willingness to do so.
"We have a good relationship with China. I think we have a good relationship with almost every country. Everyone wants to establish relations and make trade deals with the United States," he said.
Asked about his approach to tariffs on China, Trump said, "I'm not going to say I'm going to be tough on China. We're going to be very nice. They're going to be very nice. We'll see what happens. But ultimately, they have to make a deal, or they can't deal with the United States."
Trump noted that the tariff rate applied to China will not remain at 145%, but it will not be zero either.
Tariffs harm the global economy.
Meanwhile, China's Xinhua News Agency quoted President Xi Jinping as saying on Wednesday, as he received his Azerbaijani counterpart, Ilham Aliyev, in Beijing, that tariffs and trade wars "undermine the legitimate rights and interests of all countries, harm the multilateral trading system, and impact the global economic order."
China's Ministry of Commerce this week warned other countries against seeking an agreement with Washington "at the expense of Chinese interests."
"Appeasement attempts will not bring peace, and compromises will not be met with respect," a ministry spokesman said in a statement issued Monday.
In phone calls with his British and Austrian counterparts on Tuesday, Chinese Foreign Minister Wang Yi urged the United Kingdom and the European Union to help defend multilateral trade.
In early April, Trump announced the imposition of what he called "reciprocal" tariffs on all countries worldwide, with a minimum of 10%.
On April 9, Trump suspended the application of additional tariffs on trading partners, excluding China, for 90 days, while raising the "reciprocal" tariff rate imposed on China, which responded with similar measures, to 125%.
On April 2, Trump imposed a 34% tariff on Chinese imports, in addition to the 20% tariff he had imposed in the previous two months, prompting Beijing to respond in kind and impose the same rate (34%) on US exports.
It's worth noting that China was the first country to respond to the "reciprocal tariffs" announced by US President Donald Trump on April 2. As a result of the tariff confrontation between the two countries, the United States raised its tariffs on China to 145%, and Beijing raised them to 125%.