The core pathogenesis of membranous nephropathy is spleen-kidney depletion and dampness-stasis blocking collaterals， in which spleen-kidney depletion runs through the whole process of membranous nephropathy. Spleen and kidney depletion often occurs in the early stage of membranous nephropathy， accompanied by the progression of the disease and the stagnation of deficiency and qi， which leads to the obstruction of kidney collaterals by patho-logical products such as phlegm， blood stasis and water-dampness， and then the formation of stasis obstruction in kidney collaterals over time. Huangqi （Radix Astragali） as an important herb for supplementing spleen and boosting kidney can be used to fortify spleen， consolidate kidney and generate essence， and to boost qi， expel blood and unblock collaterals when treating membranous nephropathy. With combined medicinals， it can dispel and remove wind， astringe， store and consolidate essence， unblock stagnation and remove excess， strengthen efficiency and supplement deficiency， raise yang and lift the sunken. Besides， it is emphasized that caution should be taken against the drawbacks that excessive sweet may constrain the stomach， and the sweet and the warm may assist heat in the treatment of membranous nephropathy. The degree at which the spleen is supplemented and the kidney boosted should be chosen properly， and the medication contraindications should be cautioned.