The utility model discloses a novel prevent deposiing rainwater grate installation and use spacing frame, including panel and frame, the frame is fixed in the panel below, and panel and frame are the rectangle, and it is very little that the frame size is less than a board ruler. During the construction, adhesion pitch when paining diesel oil on the spacing frame and can avoid asphalt paving reduces bituminous material's waste, practices thrift the cost, has improved the efficiency of construction, has reduced the labour and extravagant and improved the installation quality of preventing subsiding rainwater grate.