This disclosure provides a flexible substrate, a production method of a flexible substrate, and a display apparatus. The flexible substrate comprises a flexible base and a flexible thin film, and the flexible thin film adheres to the flexible base. The flexible thin film is used to absorb and store heat when the temperature of the flexible base is higher than a first threshold temperature and to release heat when the temperature of the flexible base is lower than a second threshold temperature so as to adjust the temperature of the flexible base.