The invention discloses equipment and a process for preparing a soil conditioner from fly ash. The equipment comprises a first conveyor, a first crusher, a first closed conveyor, a first closed screening machine, a first returned material conveyor, a second closed conveyor, a fly ash bin, a high-pressure roller press, a scattering and granulating machine, a screening machine, a returned material conveyor, a quantitative packaging machine, a finished product warehouse, a second feeder, a humic acid bin, a fourth closed conveyor, a second returned material conveyor, a second closed screening machine, a fifth closed conveyor, a second crusher, a second conveyor and an automatic control device. According to the equipment and the process for preparing the soil conditioner from the fly ash, the prepared fly ash soil conditioner can be applied for a long time, the soil hardening problem is solved, trace elements necessary for crops can be supplemented, and the fly ash soil conditioner prepared by the equipment and the process for preparing the soil conditioner from the fly ash not only reduces environmental pollution, but also can create higher economic benefits.