Heat treatment temperature control box adopts a miniature digital temperature controller of imports as a temperature control instrument, has the procedure given and adaptive control function, through the measurement and calculation of PID controller, fuzzy self-tuning arithmetic functions, the temperature control is accurate to plus or minus 0.1 DEG C, the preset program for each point by 8 slope of heating, constant temperature, cooling; universality, simple operation, stable operation performance in the industrial environment with strong interference, and equipped with automatic temperature recorder; according to the needs of the user can be equipped with 0-220V output voltage, the voltage regulating function