During grain storage,there would be some phenomena happened in the grain bulk,such as heating,mould and propagating.When
high moisture,pest and mould occurred,the activity of biology and chemistry in the grain bulk will result in the
temperature rising of the grain bulk.Therefore stored
grain temperature must be monitored accurately and visualized betimes.This paper introduces the computer graphics to the monitoring system used to detect the stored-grain condition,using removal hidded-lines technique to supply the user with intuitionistic and verisimilitudinous three-dimension temperature distributing graphics.In this picture,when the user uses mouse to pitch on a special point in the grid,the graph can display and output the corresponding point's position and the temperature value in the screen,and can also show the cross sections of temperature in x and y directions at the same time,in this case it is very convenient for user to find the abnormal temperature point.The Visual Basic version 6.0 was used to programme for drawing the three-dimension graphics.The technique provides the good basis to research and develop the information management system with independence property right for the grain storage.