The strict demands of wire-line coring drill string have been set and function and reliability requirement of wire-line coring drilling tool has been going higher along with the greatly increased geological coring drilling project in medium depth hole. Hanging device safety of S75-SF wire-line coring tool is improved by double elastic clip structure with inner assembly releasing and fishing speeding up and washing fluid pressure fluctuation reducing, pressure loss of mud pump can be decreased for wall stability in complex formation. Inserted connected structure is adopted for inner assembly and inner core barrel, which can be operated conveniently.