Yes, you can absolutely get into law school with a psychology degree. A psychology degree is a perfectly acceptable undergraduate major for law school applicants. Law schools are looking for a variety of skills and experiences, and a psychology background can actually be beneficial. The analytical, critical thinking, and research skills developed in psychology are highly transferable to legal studies.
However, it's important to remember that a strong GPA, a good LSAT score, and compelling application materials (personal statement, letters of recommendation, etc.) are crucial for admission to any law school, regardless of your undergraduate major. The psychology degree itself doesn't guarantee admission, but it certainly doesn't disqualify you.