It depends on your school and professional requirements. Some schools and majors may require students to pass graduation experiments before graduation, and some schools and majors may allow students to resubmit or retake exams. You need to contact your tutor or the academic affairs office of the school to understand your situation and determine the next step.

Graduation experiment failed.

First of all, don't blame yourself too much and be too depressed. Failure is a common phenomenon in scientific research and one of the necessary conditions for success.

Secondly, it is necessary to analyze the causes of failure and find out the problems, which may be problems in experimental design, experimental operation, equipment or data analysis.

Then, you can try to redesign the experimental scheme, or improve your experimental operation skills, or ask your tutor or classmates for help and advice.

Finally, we should keep a positive attitude, keep learning and exploring, keep trying to practice, and believe that we can overcome difficulties and achieve success.