A heat-resistant fabric comprising a nonwoven fabric of a polyphenylene sulfide fiber impregnated with a synthetic resin in an amount of 5 to 50 % by weight based on the total amount of the nonwoven fabric, characterized in that the bending resistance as measured by the Gurley method specified in JIS L 1096 is 3000 to 10000 mgf. The fabric has heat resistance, pleatability, and shape retention at high temperature after the pleating and can be used in a filter medium and the like for collecting dust discharged from refuse incinerators, coal boilers, metal melting furnaces and the like at high temperature.