1. Academic Requirement: Applicants must hold a Bachelor's degree or higher, ensuring they have the academic foundation necessary for graduate study.

2. Language Proficiency: Depending on the program, candidates are required to provide proof of language proficiency, such as recognized language certificates accepted by the University of Barcelona.

3. Transcripts and Diploma: Original and translated copies of the Bachelor's degree certificate and diploma, as well as academic transcripts, must be provided to verify academic achievements.

4. Degree Verification: An official English translation of the degree verification from China's Higher Education Student Information System (CHESIS) is necessary to authenticate the Chinese degree's validity.

5. Eligibility Certificate: A notarized copy of the eligibility certificate is required to demonstrate the applicant's qualifications for further study.

6. Personal Identification Documents: Scanning of the first page of the passport and the front and back of the ID card are needed for identity verification.

7. Application Deadlines: Applicants should carefully note the application deadlines set by each faculty of the University of Barcelona to ensure submissions are made within the specified timeframe.

8. Equivalent Average Score Statement: A statement converting the domestic grading system to the Spanish system is required, as per Spanish educational requirements, to facilitate faculty assessment.

9. Additional Supporting Documents: Prepare letters of recommendation, personal statements, research proposals, etc., to showcase the applicant's personal background and academic motivation.

10. Financial Proof: Evidence of sufficient funds to cover the costs of study is required. This ensures that applicants have the financial means to support themselves throughout their education.

In summary, applying for a graduate program at the University of Barcelona necessitates the submission of comprehensive and accurate application materials that meet the university's specific criteria. It is recommended that applicants plan ahead, carefully read and follow the university's application guidelines, and ensure all documents are complete and up to standard to increase their chances of admission.