The invention belongs to the technical field of electronic bid inviting and bidding, and particularly relates to an electronic bid inviting and bidding document online generation and signature methodand an electronic bid inviting and bidding system. Aiming at the defects of complex operation process, high operation cost and low working efficiency when a traditional offline paper bidding documentis manufactured, the online generation and signature method for the electronic bidding document is applied to a bidding and tendering system and comprises the following steps: S4, a bidder selects a corresponding bidding product on an electronic bidding document generation page, and generates the electronic bidding document on line by one key; And S5, after the electronic bidding document is generated, a bidder inserts a key, inputs a key pin code, selects a signature position and the number of signature pages, and carries out page batch online electronic signature. According to the online generation and signature method for the electronic bidding document, the legality of the electronic bidding document is guaranteed through the digital certificate and the electronic signature, it is notrequired that the electronic bidding document submits paper materials stamped with officials and legal officials any more, low carbon and energy conservation are achieved, and traditional bid evaluation in the form of paper files is avoided.