The invention discloses a method and device for batch log storage and relates to the technical field of software development. The method and the device are used for solving the problems that in the prior art, when network behavior analysis products store received batch logs, the logs are lost easily, information timeliness is not high, and a performance bottleneck of a system is caused easily. The method comprises the steps of establishing a first task and a second task, and when the first task receives information logs, writing the information logs into a preset buffer area; causing the second task to determine write time of writing all the information logs included in the buffer area into the buffer area, and causing the information logs with the time difference between the write time and current time smaller than a first threshold to be marked as first information logs, and when the number of the first information logs exceeds a second threshold, storing the first information logs into a database.