Abstract: A method of seismo electromagnetic detecting of hydrocarbon deposits has the steps of simultaneously initiating an electromagnetic field and a seismic wave in investigated geological region so that an electromagnetic signal originates by vibrating of hydrocarbon deposit surface excited by the electromagnetic field and travels from the surface, recording the electromagnetic signal together with transient electromagnetic process in the region, and making a conclusion about a hydrocarbon deposit based on the recorded electromagnetic sign together with the transient electromagnetic process.