Objective：This study aims to study the clinical effect of tongue crib combined with occlusal pad appliance in the early treatment of primary anterior crossbite. Methods：There were 80 cases of anterior crossbite in deciduous teeth selected，40 cases in experimental group were treated with tongue crib combined with occlusal pad appliance，and 40 cases in control group were treated with traditional occlusal pad appliance. The changes of jaw，teeth，soft tissue and hyoid in the two groups before and after treatment were analyzed by cephalometric technique. Results：Compared with the control group，ANB，UI-SN，UL-SnPos increased in experimental group，Cm-Sn-UL decreased in experimental group，the tongue crib combined with occlusal pad appliance was effective in the treatment of malocclusion of the upper and lower teeth and the facial form of the patients significantly，H-RGn，H-S，H-FH increased，H-C3 decreased，and the tongue crib combined with occlusal pad appliance made the hyoid move backward and downward. Conclusion：Tongue crib combined with occlusal pad appliance can effectively treat deciduous crossbite，especially for the position of hyoid bone，and can be used in clinical practice.