How do I know that the patent I want to apply for does not conflict with others?

Before applying for a patent, you should conduct a patent search to find out the patents similar to the technical scheme you applied for and compare them one by one. Which of your technical solutions is public technology and which is your own unique technology? This part of your own unique technology meets the requirements of novelty and creativity in patent law. You can apply for a patent and write it in the patent claim for protection. If you don't have your own unique technology and it's all public technology, your patent may be invalid. If you don't understand patent search, you'd better find a professional search agency to help you search, or directly find the National Patent Search Consulting Center.