The real problem in the last decade. The entrance examination question bank of mathematics for postgraduate entrance examination comes from the real questions in recent ten years, 1987-2000 entrance examination questions of mathematics for postgraduate entrance examination, national entrance examination questions of mathematics for postgraduate entrance examination and preparation examination questions. At present, the analysis of real questions on the market is almost all real questions in the past ten years, which can make students who take the postgraduate entrance examination master the whole mathematics unified examination questions and preparation questions comprehensively and accurately, which is of great help to the postgraduate entrance examination review.