If you have a bad relationship with your roommate, you can try the following measures to improve the situation:

1. Direct communication: Find a suitable time to sit down and talk honestly with your roommate. Express your feelings and concerns. Open communication can help both parties understand each other better and find solutions to problems.

2. Respect differences: Everyone has different living habits and personalities. Try to respect your roommates’ personal space and preferences. Avoid disrupting the other person and try to get the other person's consent before doing something.

3. Seek compromise: Both parties can find some areas of common ground and try to reach a compromise. Some common rules and guidelines for indoor living can be discussed to maintain a harmonious roommate relationship.

4. Seek help from the school or dormitory management: If the relationship cannot be improved after trying your best to communicate and compromise, you can seek help from the school or dormitory management. They can provide relevant advice or step in to resolve the issue.

5. Seek other accommodation options: If the above methods still fail to improve the situation, you can consider looking for other accommodation options, such as applying for a change of accommodation or moving out. Healthy and comfortable accommodation is vital to academic and personal development, and it's important to make sure your living environment is suitable for your needs.

It is important to remain calm and respectful and seek the best way to resolve the issue. Sometimes roommates do have conflicts, but through communication and mutual understanding, you may be able to build a better relationship.