The invention relates to a composite cable for signal and digital network transmission. The composite cable comprises a copper conductor, a polyolefin insulator, a wrapping tape, a copper wire sub-shield, a flame-retardant isolating layer, a non-metal glass fiber reinforced plastic rod, a copper tape total shielding layer, a flame-retardant inner sheath, a double-steel-strip armor and a halogen-free low-smoke flame-retardant elastomer outer sheath, and is characterized in that two insulating wire cores are twisted into one group to form a twisted wire pair, one twisted wire pair and four twisted wire pairs are respectively and longitudinally wrapped with the wrapping tape and braided with the copper wire sub-shield, so that a signal control twisted basic unit group and a digital network four-pair basic unit group are manufactured; and the copper strip total shielding layer wraps the cable core, the flame-retardant inner sheath is extruded outside the copper strip total shielding layer, the double-steel-strip armor wraps the flame-retardant inner sheath, and the halogen-free low-smoke flame-retardant elastomer outer sheath is extruded outside the outermost layer. The composite cable for signal and digital network transmission has the advantages that signal control and digital network transmission are integrated, and the composite cable has the performance of electromagnetic radiation prevention, tension resistance, bending resistance, cracking resistance and side pressure resistance.