There are many factors that affect rebar futures: 1, spot price trend expectation; 2. Because the steel plate occupies a heavy weight in the Shanghai and Shenzhen stock markets, the Shanghai and Shenzhen stock markets have a great influence on rebar futures; 3. Because the macroeconomic impact on basic metals is basically the same, the impact of the trend of copper, aluminum and zinc on rebar futures; 4. The main institutions have a great short-term impact on the rebar futures market.