If you think the loan platform is unreasonable, you can take the following steps to complain: 1. Complain to the loan platform: First, you can directly contact the loan platform and put forward your complaints and dissatisfaction. If the loan platform is willing to solve the problem, then your problem may have been solved. 2. Complain to the regulatory authorities: If the loan platform is unwilling to solve your problem, you can complain to the local financial regulatory authorities. Please provide the name, specific matters, losses and impacts of the loan platform. 3. Complain to consumer protection organizations: If you feel that neither the loan platform nor the regulatory authorities can solve the problem, you can contact consumer protection organizations, such as consumer associations, for help and support. Please note that before submitting a complaint, please prepare relevant evidence and documents to better prove your statement and claim.