The invention discloses a multi-region storage based parameter storage method for a distribution network terminal device. A storage module comprises at least three or more storage regions which are regions 1-n respectively, wherein n is greater than or equal to 3. When the distribution network terminal device runs for the first time, default values of all parameters are stored in the storage regions; when being modified, the parameters are stored in the storage regions after being checked; when the distribution network terminal device runs normally, the parameters of all the storage regions are cyclically detected, and if all the storage regions have errors and the errors do not disappear after rechecking, functions related to the parameters are disabled; and as long as one correct storage region exists, the parameter of the correct storage region is stored in the error storage region, and if an error does not disappear after rechecking, a system reports the storage region with the error and enters a normal running state, so that the problem that the parameter cannot be used due to the fact that an exception occurs to one memory is solved.