DPF regeneration control method

The invention discloses a DPF (diesel particulate filter) regeneration control method, which relates to a post-processing system and comprises the following steps: acquiring a DPF carbon loading capacity, activating regeneration when the DPF carbon loading capacity reaches a set value, and entering a regeneration control mode; whether the inlet temperature of the DPF is larger than or equal to a set temperature threshold value or not is judged, and if yes, the engine is normally regenerated till regeneration is finished; and if the DPF inlet temperature is smaller than a set temperature threshold value, the temperature deviation between the DPF inlet temperature and the temperature threshold value is judged, and after the temperature deviation is larger than or equal to the set temperature threshold value, the cylinder deactivation function is started till the DPF inlet temperature is larger than or equal to the temperature threshold value. The exhaust temperature of the engine is increased while power output