The invention relates to a camera heat-insulating and protecting sleeve for a high-temperature industrial television and a realization method thereof. The camera heat-insulating and protecting sleeve comprises a protecting sleeve shell and a rear cover, wherein the shell is provided with a front flange and a rear flange; a layer of heat-insulating material A is coated on the inner wall of the protecting sleeve; a layer of heat-insulating material B is coated on the rear cover; and the heat-insulating material B is a silica gel plate or a rubber plate. The realization method comprises the following steps of: 1) erecting the protecting sleeve shell; 2) injecting two liquid materials, namely poly propylene A and poly propylene B, into the place between the inner wall of the protecting sleeve shell and the outer wall of a cylindrical die respectively, and covering a gland on the protecting sleeve shell and the cylindrical die; and 3) taking the gland off and removing the cylindrical die out. The protecting sleeve has the characteristics that: structure is simple; the protecting sleeve is convenient and easy to process; the labour and materials are saved; and the cost is low.