Provided is a soft rock laneway invert arch bridge control heaving floor method. The method comprises the steps that based on the width d meters of the laneway design, determining the length d meters of a long invert arch bridge, and the length 0.5 d meters of a short invert arch bridge hair; bending and roll compacting the long invert arch bridge and the short invert arch bridge, the curvature k of the bending and roll compacting is determined by the formula (maths num='0001')(math)(!(CDATA((math display ='block')(mrow)(mi)k(/mi)(mo)=(/mo)(mfrac)(mn)80(/mn)(mrow)(mn)25(/mn)(msup)(mi)d(/mi)(mn)2(/mn)(/msup)(mo)+(/mo)(mn)16(/mn)(/mrow)(/mfrac)(/mrow)(/math))))(/math)(img file='de st-path-image001.TIF'wi='190'he='94'/)(/maths); exhuming a laneway in accordance with the sizes of a section design, exhuming a long groove following the curvature k in the bottom floor, the length is d meters, exhuming a short groove further under based on the exhumed long groove, the curvature is k, the length is 0.5 d meters; placing the short invert arch bridge into the grooves, the placing the long invert arch bridge onto the short invert arch bridge, then anchoring the long invert arch bridge, the short invert arch bridge and bottom floor using an anchor, to form a support structure; then backfilling the long groove and punning. The soft rock laneway invert arch bridge control heaving floor method effectively controls the heaving floor, prolongs the service life, and lengthens the periodicity.