WASHINGTON—The Trump administration is putting together a package of anti-China measures, including tariffs on at least an annual $30 billion of Chinese imports, to pressure Beijing to end requirements that U.S. companies transfer technology to Chinese firms.

According to a White House official and people briefed on administration deliberations, the measures are the next part of an administration trade policy aimed at reducing the enormous U.S. trade deficit. President Donald Trump has said that he wants China to come up with...