The patent applicant"s obligation to disclose information is to require the applicant to provide information that he knows and has an important impact on the patentability of the application to the patent administration on his own initiative. The scientific construction and proper performance of information disclosure obligations will help to reduce the search cost of information under examination, improve the quality of patent application and examination, and help to establish an honest patent operation system. According to the different legal responsibilities, information disclosure obligations can be divided into three legislative models: strong legal liability, weak legal liability and no legal liability. China"s Patent Law is a non-legal liability model, which leads to the vacuity of information disclosure obligations, seriously affecting the realization of the value objectives of the patent system. We should reconstruct the patent information disclosure system in China from the aspects of the subject of information disclosure obligation, the content of disclosure, the time and manner of disclosure, and at the same time stipulate clear legal liability for the violation of information disclosure obligation.