The invention discloses a continuous tide calculation method based on a wind power fluctuation rule. The continuous tide calculation method comprises the following steps of: analyzing an active power fluctuation characteristic of a wind power field by adopting an analytical method in the poisson process, and constructing a probability model; determining a time interval of wind power outlet fluctuation and the output variation situation of the power of the wind power field according to the probability model and a statistical result of the wind power variation, thus obtaining the fluctuation rule of the wind power output; performing continuous tide calculation within the same time interval according to the fluctuation rule, thus obtaining a state variable value; and analyzing the state variable value, analyzing the influence of access of large-scale wind photoelectricity on the tide, thus obtaining the influence of wind power on the tide. According to the continuous tide calculation method based on the wind power fluctuation rule, advantages of wind power fluctuation compatibility and high calculation speed are realized; and due to application of actual power grid data, the correctness and the practicability are proved.