"This is about getting the Dow up a little bit but also pressuring [China]," said on "Squawk on the Street" before the opening bell "You put this tweet out because some of the price-weighted stocks in the Dow will rally."
Dow futures were sharply lower for a third straight session before Trump tweeted that Chinese negotiators "just informed" the White House they are "coming to the U.S. to make a deal" on trade.
Trade talks were set to get continue in Washington on Wednesday, under the U.S. threat of increased tariffs on Chinese imports from 10% to 25% come midnight Friday.
"This is all we do. We parse" tweets from Trump, Cramer said, questioning what to believe. "It's amazing how these things matter."
Cramer reiterated Wednesday a theme he touched on Tuesday evening, advising investors to "sit on your hands at this point" — don't buy or sell stocks because the climate is too volatile.