The invention relates to a construction technique for a composite pile formed through broken stone consolidation by slurry. According to the construction technique, a pile hole is dug in a pile position firstly, and a broken stone cushion layer is laid at the bottom of the pile hole; then a prefabricated pipe pile with a slurry injecting pipe is implanted into the pile hole; broken stone is fed into the pile hole, and broken stone which continues to be fed into the pile hole is vibrated to be dense; a close cover is arranged on the upper portion of the pile hole, and valves are arranged on pipe bodies, stretching out to the upper portion of the close cover, of the slurry injecting pipe and a slurry outflow pipe; slurry is pumped into the pile hole through the slurry injecting pipe till the slurry in the pile hole overflows from the slurry outflow pipe, and when the slurry concentration of the slurry outflow pipe reaches the design demand, slurry injecting is stopped, and the valves are closed; and after natural curing is finished, the composite pile formed through broken stone consolidation by the slurry is obtained. The construction technique for the composite pile formed through broken stone consolidation by the slurry is simple, quick and efficient in construction, low in noise, vibration and impacting force during construction, stable in pile-forming quality and high in single pile bearing capacity. The construction technique for the composite pile formed through broken stone consolidation by the slurry is especially suitable for construction sites with a narrow field and pile foundation construction near large buildings or historic monuments and sites and has great economic and social value.