Making method of high temperature-resistant filter material

The invention provides a making method of a high temperature-resistant filter material, characterized in specific steps of mixing glass fiber and polyphenylene sulphide between which the weight ratio is 1:1 to 1:5, weaving into a substrate cloth of which the density is 100 to 170g/m, respectively placing a polyphenylene sulphide fiber net of which the density is 150 to 350g/m on upper and lower sides to obtain a three-layer composite material of which the density is 400 to 800g/m; pre-needling the three-layer composite material, spunlacing to pre-wet at high pressure, spunlacing the front and back faces to reinforce for 4 to 8 times, condensation resisting, and finishing to obtain the high temperature-resistant filter material. The high temperature-resistant filter material has good high temperature-resistance, long service life and high filtering performance.