DPF regeneration control method, tail gas treatment system and vehicle

The invention discloses a DPF regeneration control method, a tail gas treatment system and a vehicle, and belongs to the technical field of engine emission. The DPF regeneration control method comprises the steps that S1, driving regeneration is started, and if driving regeneration succeeds, driving regeneration is quitted; if the driving regeneration fails, the S2 is carried out; S2, a carbon loading amount m and a pressure difference P are acquired; S3, when m is larger than a or/and P is larger than p , m is smaller than or equal to a , and P is smaller than or equal to p , the S4 is carried out; S4, when the number of times of driving regeneration is smaller than or equal to the preset number of times, the vehicle speed is increased, and then the first step to the third step are conducted in sequence; when the number of times of driving regeneration is larger than the preset number of times, the S5 is carried out; and S5, parking regeneration is started. The DPF regeneration control method, the tail gas t