China is a close economic and political partner of Russia, which invaded Ukraine in 2022. Beijing has said it takes a neutral stance on the Ukraine war, and has never condemned the invasion.
"We are in constant contact with our American partners," Zelensky told a summit in Romania.
"We are thankful, and we are expecting that the issue of ending of the Russian war against Ukraine will be raised now as well, while the president of the United States is in China," he added.
Zelensky's comments come as US-led efforts to end the bloodiest war in Europe since World War II falter, with Washington distracted by the Middle East conflict.
Trump last week brokered a three-day ceasefire between Russia and Ukraine which was marred by allegations of violations by both sides. Moscow and Kyiv launched large-scale attacks immediately after.