he filtration properties of the new glass and chemical fiber elements were comparative experimental studied by using the multi-pass test method. The results show that the size and filter have a certain influence on the filter properties of the filter. The new type of glass fiber element has better filtration properties than the new chemical fiber element. When the same limit pressure is reached, the new type of glass fiber element is longer and the flow resistance is more better, more pollutant capacity, with ϕ50 mm new glass fiber element capacity of 14.3 g, the same size of the new chemical fiber element capacity of 13.4 g. Within the experimental range of selected pollutant particles, the average ratio of glass fiber element is 1 000 or so, the average filtration ratio of new chemical fiber element is about 800, the final filtration efficiency can reach 99.9%. Under the experimental conditions, ϕ50 mm new glass fiber element filtration properties are the best.