Legal analysis: If the traffic police catch a van disassembling seats, they will be fined. Impose a fine on trucks that dismantle seats and change technical parameters without authorization; The dismantled back seat of the van will be fined 200 yuan, deducted six points and punished for illegally modifying the car; The traffic administrative department of the public security organ shall order the other party to restore the original state as soon as possible, and impose a warning and a fine.

Legal basis: Article 16 of the Road Traffic Safety Law of the People's Republic of China: (1) assembling a motor vehicle or changing the registered structure, structure or characteristics of a motor vehicle without authorization; (2) Changing the model, engine number, frame number or vehicle identification code of a motor vehicle; (3) Forging, altering or using forged or altered motor vehicle registration certificates, number plates, driving licenses, inspection marks and insurance marks; (four) the use of other motor vehicle registration certificate, license plate, driving license, inspection mark, insurance mark.

"Motor Vehicle Registration Regulations" Article 57 In addition to the circumstances specified in Articles 10 and 16 of these Provisions, if the appearance of a motor vehicle and the registered relevant technical data are changed without authorization, the traffic administrative department of the public security organ shall order it to be restored to its original state and impose a warning or a fine of not more than 500 yuan.