Powder metallurgy filter component is sintered from porous ball or powder in certain atmosphere or vacuum. The domestic and international practice shows, comparing to the other material (such as metal mesh, plastics, pottery, paper quality), the powder metallurgy filtration material can meet comprehensive performance requirement in an all-round way. Performance 1) Big range of getting rid of solid impurity from fluid, filter precision from 5-120um 2) High ability to permeate fluid, easy to miniaturize part 3) Renewable after the component is stopped up by the impurity progressively, in order to lengthen service life 4) High mechanical intensity to bear the impact of the fluid pressure and press difference 5) Have the ability of bearing high temperature and resisting chemistry corroding 6) Good performance of processing and taking shape, it is convenient to make and assemble using. 7) Could make it according to special requirement.