The invention discloses an integrated device for drilling rod cleaning and oil smearing maintenance. The integrated device is characterized in that the integrated device comprises a supporting frame, a cleaning unit, a water removal drying unit and an oil smearing protecting unit; the cleaning unit, the water removal drying unit and the oil smearing protecting unit are mounted on the supporting frame in sequence; the integrated device integrates drilling rod cleaning, water removal drying and oil smearing maintenance, saves manual labor, solves the problem of inconvenience due to the fact that a labor uses a high-pressure water gun to clean a drilling rod in tradition, and lowers the cost of cast-in-place pile drilling construction. The integrated device avoids corrosion of the drilling rod in air, therefore prolongs the service life of the drilling rod and can bring certain economic benefits for construction organizations.