The invention provides an intelligent multi-dimensional weighted identity authentication and risk control method and an intelligent multi-dimensional weighted identity authentication and risk controlsystem. The method comprises the following steps: receiving an identity authentication instruction sent by a to-be-authenticated user, and the identity authentication instruction comprises multi-dimensional identity information; comparing the identity information of the multiple dimensions with reference identity information corresponding to the respective dimensions to obtain multiple comparisonresults; performing weighted average calculation on the plurality of comparison results according to the weight corresponding to each dimension to obtain a comprehensive identity verification result;and when the comprehensive identity verification result is greater than a preset threshold, returning an authentication result passing the authentication to the to-be-authenticated user. According tothe invention, the identity information of multiple dimensions is compared with the reference identity information corresponding to each dimension; and performing weighted average calculation on the plurality of comparison results according to the weight corresponding to each dimension to obtain a comprehensive identity verification result, and comparing the comprehensive identity verification result with a preset threshold to determine whether the authentication is passed or not, thereby improving the safety of the identity authentication mode.