The controlled experimentwas conducted to testthe effects of sand burial depth on seedling emergence and growth of Reaumuria Soongorica,investigate the optimal range of burial depth to maximize the seedling emergence and subsequentseedling growth,and assess seedling biomass allocation atdifferentsand burial depths. In the burial experiment,emergence percentage had a significantly negative correlation with the sand burial depth and high seedling emergence concentrated in 0-2 cm layer. The number of days from sowing seeds to seedling emergence was significantly affected by sand burial depth,which increased with in-creasing depth. Seedlings heightwas significantly affected by both sand burial depth and growth time and the relative heightgrowth rate increased with increasing depth. Therefore,seedling heightdecreased with in-creasing sand burial depth atthe prophase and itincreased with increasing sand burial depth atthe anaphase. Seedling biomass was notsignificantly affected by sand burial depth,and however,more biomass was alloca-ted to underground with increasing sand burial depth. Such morphological changes would amortize the limit-ed seed reserve to facilitate emergence. The optimal burial depth for Reaumuria Soongorica was in the range of a shallow burial depth of 0-2 cm,approximately 1 cm.