PURPOSE: To obtain a holding stabilizer device enabling a working environment to be easily fixed and released by connecting two or more shafts, edged in a drill shape, and a right and left hand rotatable driving gear to be built in a structural unit which slidably stores the shaft and the driving gear.

CONSTITUTION: A lunar surface work machine provides holding stabilizer devices 24, 25 enabling a working environment of lunar surface or the like to be easily fixed while released in case of moving. This device is provided with a drill- shaped edged shaft 1 and a rotatable driving gear 2. In explanation about action of the device, the driving gear 2 receives a signal from a drive control unit, rotating the shaft 1 to be fed out to the outside of a structural unit 6 and fixing the working environment. While for releasing the working environment from its fixing, the driving gear 2 is reversed by the drive control unit, retracting the shaft 1 from the working environment so that movement is facilitated of the lunar surface work machine.