The invention belongs to the field of geophysical exploration and provides a method for sequentially setting all acquisition node addresses in a seismic spread flexibly and reliably. In the method, spread segments can be connected according to needs and any sequence without considering serial numbers of the spread segments; and the influence from the change of a seismic exploration environment isavoided. The invention adopts the technical scheme that the dynamic allocation method for the link type acquisition node addresses in the seismic spread comprises the following specific communicationsteps of: enabling a system controlling and processing center to transmit an address setting command to a data preprocessing module; analyzing the address setting command by using the data preprocessing module; transmitting an address setting start command to each acquisition node for two times by adopting a broadcast mode according to the address setting flow; and repeating the setting process of each acquisition node address for two times and comparing the consistency of address setting results in the address setting processes for two times until the address setting is succeeded. The dynamic allocation method is mainly applied to the geophysical exploration.