1990 science mathematics in college entrance examination is generally difficult. According to relevant public information, compared with 1989, 1990 has three more multiple-choice questions, and 1 fill-in-the-blank questions are missing, which increases the overall number of questions by two. From the difficulty point of view, on the whole, the combination of 1990 college entrance examination mathematics papers is more difficult, with a larger difficulty span and greater overall difficulty.