A method for pushing information when paying subway fees on the basis of a face and a subway payment system. The method comprises: recording faces matching passenger bank accounts (S101); when a passenger exits a station, reading the face of the passenger and determining whether or not the face corresponds to any bank account and whether or not the balance of the bank account is greater than an amount payable by the passenger (S102); if both criteria are satisfied at the same time, then opening a gate to allow passage and pushing patent information to a subway operator (S104); and if either criterion is not satisfied, then keeping the gate closed (S103). The solution provides the user with more convenience when riding a subway and, at the same time, fully safeguards the interests of the inventor of the intellectual property.
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