The invention provides a processing method and device of engineering investigation data, equipment and a storage medium, and relates to the technical field of engineering investigation. The method comprises the steps of receiving a drilling position of a target drill hole and a plurality of drilling depth of the target drill hole which are sent from a terminal of an investigator; determining a proximity drill hole of the target drill hole, and acquiring a stratum information set of the proximity drill hole; acquiring stratum information of a target stratum layer in the proximity drill hole from the stratum information set of proximity drill hole according to the drilling depth with regard to each drilling depth; and sending the stratum information of the target stratum layer in the proximity drill hole to the terminal with regard to each drilling depth, wherein the stratum information of the target stratum layer in proximity drill hole is used for triggering the terminal to determine the stratum information of the target stratum layer of the target drill hole according to the stratum information of the target stratum layer in the proximity drill hole. By the method, the technical problem of relatively low accuracy of acquired stratum information in the prior art is solved.