PURPOSE: To prepare a heat and flame resistant cloth excellent in wash endurance properties by using a mixed spun fiber consisting of a halogen-containing fiber added with a flame retardant and a cellulose-based fiber.

CONSTITUTION: This heat and resistant cloth is obtained by forming a spun yarn by the mixed spinning of a halogen-containing fiber which is obtained by the fiber formation of a copolymer consisting of 40-70wt.% acrylonitrile, 60-30wt.% vinyl-based monomer containing a halogen such as vinylidenechloride and 0-30wt.% monomer containing a sulfonic acid group such as sodium methacrylic sulfonic acid or a polymer mixture consisting of 40-60wt.% partially acetalized polyvinylalcohol 60-40wt.% vinyl-based polymer containing a halogen such as a polyvinyl chloride after adding 6-50wt.% antimony oxide flame retardant mixed with a cotton in the blending ratio of (70:30)-(30:70). The heat and flame resisting cloth containing ≥4wt.% of the above flame retardant and having ≤10% dry heat shrinkage percentage in a treatment at 260°C for 5min is obtained by weaving the above spun yarn.