Prefabricated retaining wall, side width prefabricated block, middle width prefabricated block and holing construction method of prefabricated retaining wall

The invention provides a prefabricated retaining wall and side width prefabricated blocks, a middle width prefabricated block and a holing construction method of the prefabricated retaining wall, aims to solve the problems that the later holing construction risk of the prefabricated retaining wall is large, and concrete of the retaining wall is prone to cracking, and relates to the technical field of prefabricated retaining walls. The prefabricated retaining wall comprises two side prefabricated blocks and at least one middle prefabricated block; the margin precast block comprises a margin supporting column, a margin front baffle, a margin rear baffle and a concrete part, the concrete part comprises a stand column part, a margin upper cross beam part and a margin lower cross beam part, the stand column part, the margin upper cross beam part and the margin lower cross beam part are arranged up and down, and the stand column part, the margin upper cross beam part and the margin lower cross beam part are connect