The invention discloses a low-cost self-leveling mortar. The low-cost self-leveling mortar comprises the following components in proportions: 22-35% of quartz sand, 20-40% of modified fluorine gypsum, 18-25% of silicate cement, 4-18% of aluminate cement, 3-8% of zeolite powder, 4-8% of wollastonite powder, 8-18% of rapid hardening cement, 0.05-1.5% of de-foaming agent, 0.05-1% of water reducing agent, 0.05-0.3% of retarder, 0.01-2% of leveling agent, 0.1-2% of lignocelluloses, 0.1-2% of hydroxyethylcellulose, 0.1-2% of methylcellulose, 1-6% of casein and 0.02-0.06% of lithium carbonate. The low-cost self-leveling mortar has the advantages of high leveling property, wear resistance, stability, breaking strength and the like, good quality, high efficiency, low cost and helpfulness for energy saving, consumption reduction and environment improvement.