The utility model relates to an agricultural machine automatic navigator's angle sensor installing support, include: a fixed base, the spliced pole, the regulating plate, change the board, the sensorsafety cover, the bunch connects protection shield and angle sensor, it has three ARC through groove to open on the regulating plate, ARC through groove uses the regulating plate axis to become the circumference array as the center and arranges, the locking bolt passes internal thread hole on ARC through groove and the spliced pole on the regulating plate and cooperatees and lock, the end face centre position is provided with spacing post on the regulating plate, it establishes on spacing post to change the sleeve -board, and it rotates around spacing post to change the hoarding, commentarieson classics board central point puts and is provided with angle sensor. The utility model discloses a spliced pole, the spliced pole has played the effect of increasing, be provided with the oil filler point on the fixing base, makes things convenient for the oiling to solve the difficult problem of oiling, is provided with the commentaries on classics board simultaneously, angle through changeingboard angle regulation sensor and then improve the precision that angle sensor accepted data.