The invention relates to the technical field of an information label, and provides an information label for an underground intelligent switch tool. The information label comprises a fastening head, a filling and sealing layer, a label, a main casing and a counterweight head, wherein the fastening head, the main casing and the counterweight head are sequentially fixed and installed together from top to bottom; a blind hole with an upward opening is formed in the center inside the main casing; the label is coaxially fixed at the bottom of the blind hole; the length of the label corresponds to the depth of the blind hole; and the filling and sealing layer is arranged between the blind hole and the label and on the top of the label. The information label has the advantages that the structure is reasonable and compact; the operation is convenient; the main casing is a PEEK (Polyetheretherketone) resin main casing; the fastening head is a PEEK fastening head; the label is covered by the filling and sealing layer and is fixed in the blind hole of the main casing; the goals of high-temperature resistance, high-pressure resistance, high-humidity resistance, high-corrosion resistance and flushing resistance are achieved; the defect that the label used for the normal state is difficult to meet the underground complicated conditions is overcome; and the information label can be widely applied to the underground intelligent switch tool, a reaming while drilling tool and the like.