Legal analysis: It is not illegal to simply tear up the seal of the Public Security Bureau. According to the circumstances, corresponding public security penalties can be given. Deliberately tearing up the seal of the Public Security Bureau requires corresponding legal responsibility.

Legal basis: Article 314 of the Criminal Law of People's Republic of China (PRC) conceals, transfers, sells off or intentionally damages the property that has been sealed up, detained or frozen by the judicial organs. If the circumstances are serious, they shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or a fine.