The invention discloses a multipoint support detection method of weld seams of multi-type electronic fittings. The method comprises a vacuum detection bench, the vacuum detection bench is provided with a movable type base, the movable type base is provided with an upright column, the upright column is provided with a support disc capable of vertically moving along the upright column through a lock pin, the support disc is provided with a flexible bag, and the bag is filled with a liquid medium. The side surface of a rectangular box body is provided with a flat clamp, the flat clamp has a certain thickness, the rectangular box body is connected with a lower transverse arm through a rotating shaft, the rectangular box body is provided with a fastening bolt, through rotating the rectangular box body, switching into clamping or compaction of a fitting can be realized, the method is applied to fittings with different specifications, when the fitting is placed on the flexible bag, the fitting is naturally oriented downwards under the effect of gravity, and the liquid medium drives the bag to wrap and fix the fitting and exhibit a support effect, such that fixation of hardware is reduced, and the electronic fitting is effective protected.