Can the invention be written in the title when applying for a patent?

Generally speaking, it is not allowed. In claim 1, the theme is written in the preface, but the theme has its own characteristics and is written at the back. In this way, features appear in both the preface and the feature part, which does not meet the requirements of concise and clear claims. Does not conform to the provisions of the fourth paragraph of Article 26 of the Patent Law, so don't write the invention in the title.