The invention discloses a method for managing and modifying network parameters, which includes the following steps: collecting parameter values in various types processed by every kind of network element in present network, which are provided by various firms; for each type of parameter, summarizing the corresponding relationships between different firms and the type of parameter among the collected parameters; analyzing and displaying the obtained corresponding relationships from the summary; receiving the updating parameter inputted from exterior, and generating the corresponding parameter modification examination worksheet; seeking for the parameter level information corresponding to the parameter modified by exterior, in the mapping relation between the pre-set parameter and parameterlevel; seeking for the information of department of examination and approval corresponding to the parameter level information, among the mapping relationships between the pre-set parameter level and the information of the department of examination and approval; sending the modification examination worksheet to the corresponding department of examination and approval to examine; when the examination is passed, modifying the corresponding parameters of the network element corresponding to the modified parameter based on the modified parameter. The modification process of the network parameter is safe and controllable according to the scheme.