The digestibile energy (DE) requirement of three stages, 20--35, 35--60 and 60--90kg, of Gansu white swine was studied by using regressionequation according to the result of feeding and digestion-metabolism testbased on the different DE and the same crude protein (CP) intake, and 24Gansu white piglets with equal numbers of boars and gilts were dividedinto 3 groups by the randomized complete--block design. The diets of 3groups of each stage contained different level of DE and the same levelof CP. The digestion-metabolism experiment was made in the middle ofeach?stage. The regression equation of DE requirement of each stage was obtainedaccording to average daily gain (ADG) and daily DE intake of each swineof 3 groups in the digestion--metabolism experiment by statistical analysis.They are: For 20--35kg: y_1=3.2230+2.9985x_1 p<0.01 For 35--60kg: y_2=4.0028+4.1946x_2 p<0.01 For 60--90kg: y_3=4.9843+5.6614x_3 p<0.01 The DE requirement of growing--finishing Gansu white swine was obt-ained using expecting ADG in place of the corresponding regression equation.