The　electricity　consumption　of　commercial　buildings　is　discussed　in　terms　of　rank　of　load　ratio　which　is　most　of　the　air-conditioning　power　consumption　is　used.　And　the　air-conditioning　of　commercial　building　uses　ice　storage　and　central　air　conditioner　to　adjust　the　indoor　temperature　and　humidity　to　complete　a　comfortable　working　environment.　Both　Ice　storage　equipment　and　central　air　conditioner　use　the　electric　power　to　match　the　peak　and　off-peak　loading　period　by　coordination　strategy　to　make　ice　and　melt　ice　which　can　save　the　consumption　power.　Firstly,　to　investigate　the　load　characteristic　curves　of　the　air　conditioner　mainframe　(ACM)　and　ice　storage.　Secondly　is　to　collect　electricity　consumption　data　of　commercial　key-customers　and　analyze　the　proportion　and　relationship　of　power　consumption　of　related　conditioning　equipment.　Coordination　both　of　ice　storage　and　ACM　that　can　suppress　the　peak　loading　and　base　on　the　peak　and　off-peak　period　in　load　curve　of　the　commercial　key-customer　to　derive　the　index　parameter　of　power　suppress　of　peak　power　or　power　shifting.　©　2019　IEEE.