The invention discloses a stratum reinforcement PSC construction method which comprises the following construction steps: 
lofting hole sites; performing first hole construction; determining 
slurry proportion; performing stratum drainage construction; performing stratum reinforcement grouting; repeating the previous steps, thereby finishing all the stratum reinforcement PSC construction steps. The stratum reinforcement PSC construction method has the beneficial effects that equipment used in the stratum reinforcement method is relatively small in size and flexible in movement among hole sites; the 
slurry consolidation time can be regulated according to practical situations; the 
slurry penetrability is favorable; the slurry can be consolidated under the condition of circulating water, is difficult to dissolve and good in 
water stop effect; the reinforcement method is applicable to various strata, wide in application range, good in environment-friendly functional effect, less in environment 
pollution, good in 
safe operation function and high in construction speed; by virtue of adopting the technology for construction, the construction process includes advancing-type construction and backing-type construction, additional hole guiding is not needed, the additional hole guiding time is saved, and hole collapse is avoided; the preparation of construction is simple, around-the-
clock construction can be performed and the 
engineering cost is low.