The six-arm dipmeter is applied in the petroleum logging field to detect formation inclination angle and inclination direction and to research in stratigraphy. The utility model comprises an anti-rotary joint, a centralizer, a cable telemetry cartridge, an insulation cartridge and an insulation shell. An electronic device, an inclination measuring cartridge and a hydraulic swing arm are installed in the insulation shell top to down. The lower part of the hydraulic swing arm is connected with a bar system. The utility model is characterized in that the number of the bar system is six and one electrode plate is fixed at the end part of each bar system. Two electrodes are fixed side by side on each electrode plate. Each electrode is connected with the electronic device through the relative circuit in the electrode plate. The effects of the utility model are that the logging of formation inclination angle and inclination direction can be completed. Because the electrode distribution is more reasonable, the contact between the electrode plate and the side wall is better, the well logging information acquired is more, the reflection of geometric shape of hole is more sensitive, the resistivity logging quality is improved and the utility model can be used for stratigraphy research.