Legal analysis: it is not illegal to pull banners to collect debts. Although this kind of behavior is not illegal on the surface, its nature is easy to change, which leads to illegal behavior. Debt collection should take proper and legal means, and you can go to court to sue the debtor. After winning the case, you can ask the court to enforce it.

Legal basis: Article 243rd of the Civil Procedure Law of People's Republic of China (PRC). If the person subjected to execution fails to perform the obligations specified in the legal documents according to the notice of execution, the people's court has the right to detain and withdraw the income from which the person subjected to execution should perform the obligations. However, the necessary living expenses of the person subjected to execution and his dependents shall be retained. When withholding or withdrawing income, the people's court shall make a ruling and issue a notice of assistance in execution, which must be handled by the unit to which the person subjected to execution belongs, banks, credit cooperatives and other units with savings business.