1. Understanding job requirements: Through the investigation of the job, you can have a deeper understanding of job responsibilities, skills requirements, experience requirements, academic qualifications and other information. This will ensure that your resume accurately shows your skills and experience related to this position and improve the pertinence of your resume.

2. Improve the matching degree: after understanding the job requirements, you can modify the resume content in a targeted manner to make it more in line with the requirements of the recruiter. This can increase the competitiveness of resumes among many applicants and improve the chances of being concerned and hired by the recruiter.

3. Understand industry trends: Understand the latest trends, development trends and related technical updates in this field by studying the industry and field where the post is located. In this way, you can prepare for your career development and understand the needs of the industry and the future development direction.