The invention provides a method and a device for removing noise from seismic data. The method comprises a step of calculating and obtaining phase space reconstruction parameters through a C-C algorithm according to acquired seismic data to be processed, a step of embedding a dimension and a delay time, a step of performing phase space reconstruction on the seismic data to be processed according tothe embedded dimension and delay time, a step of calculating a neighborhood of each phase point in a phase space and an average value of all neighborhood points in each neighborhood, and a step of performing local projection based on the average value of the neighborhood points and obtaining a noise component of the seismic data to be processed. According to the invention, by processing a seismicsignal in a time domain, the consideration of a noise type is not needed, the operation is convenient, and the processing speed is fast.