Marine placer exploration method

The invention provides a marine placer exploration method. The method comprises the following steps: configuring a seabed surface geological sampling station; based on a preparation test before work, the method specifically comprises the following steps: sounding by using a single beam; a side-scan sonar is used for measurement; measuring the section of the shallow stratum, wherein the specific mode comprises the following steps: executing single-channel seismic measurement; performing shallow drilling sampling on the shallow seabed to obtain a sample; and carrying out particle size analysis, chemical analysis and clastic mineral test analysis on the sample to obtain a marine placer exploration result. The method aims at detailed survey of marine placers, finding out landform characteristics and substrate type distribution characteristics of a mining area, controlling overall distribution of a marine placer layer, determining the length, width and thickness of a sea sand layer, the quality and material compos