The utility model belongs to the chemical industry field specifically is a full intelligent reation kettle with prepared by coprecipitation method catalyst. Full intelligent reation kettle includes the reation kettle cauldron body, the main and secondary material feeding device of liquid phase, precipitation controlling means, pH value on -line measuring device, the uniform distributor that feeds in raw material, controlling means, three -dimensional mixing arrangement, gaseous unloading device, reation kettle 0 device and reation kettle 1 panel on the spot with constant temperature. This device is applicable to the constant temperature ordinary pressure and uses the prepared by coprecipitation method catalyst down. The operator passes through the required material total amount that reation kettle was added in intelligent control panel settlement on the spot, precipitation temperature (steady temperature), heating rate, reinforced speed, precipitation terminal point pH value, key parameters such as aging time after precipitation accomplishes, just can realize the main and secondary material quantity of accurate control automatically, reinforced speed and quantity, material heating and precipitation constancy of temperature, the material misce bene, the precipitation terminal point is accurate, notice after ageing the completion, function such as liquid level switches and warning.