Trapezoidal staggered foundation pit support

The utility model relates to the technical field of foundation pit supports, and discloses a trapezoidal staggered foundation pit support, a cross beam connecting seat is fixed at the top of a foundation pit support column, a supporting cross beam and a reinforcing cross beam are arranged at the upper part of the cross beam connecting seat in an embedded and spliced manner to form a vertical supporting structure, and a connecting pin seat is fixed at the front side of the cross beam connecting seat; the lateral supporting beam is hinged to the upper portion of the connecting pin seat to form a lateral supporting structure, foundation pit supporting is of a trapezoidal staggered supporting structure and has good supporting and protecting capacity for a foundation pit structure, the support structures are connected in an embedded splicing mode, an embedded groove formed in the upper portion of the cross beam connecting seat is used for being matched with a protruding block on the upper portion of the supporting