The invention discloses a quantum-resisting secret key negotiation method. A communication party Alice selects a matrix S including n rows and l columns, and F is calculated and sent to a communication party Bob; after that Bob receives the F, a matrix S' including l rows and n columns and a matrix y including n rows and l columns are selected, and W' is calculated; Bob calculates a matrix D' including l rows and l columns and calculates C; and Bob sends B' and C to the Alice. According to the received B' and C, Alice calculates D and km=rec(D, C). According to the method of the invention, theerror probability of negotiation is zero, present quantum attacks and other attack strategies can be resisted, the operation efficiency and practicality are high, the method is easy to enforce, and the method can be integrated to TLS protocols.