IoT　(Internet　of　Things)　has　already　gained　more　and　more　attentions　globally.　But　the　IoT　is　still　young.　With　development　of　IoT　and　more　and　more　requirements　of　integration　of　things　information　based　on　different　connection　technologies,　a　connection-technology-independent　representation　method　for　information　of　things　is　needed　to　give　a　unified　definition　and　specification　for　information　of　things.　In　this　paper,　the　necessary　the　unified　definition　and　specification　for　information　of　things　are　discussed　and　a　structural　representation　method　for　information　of　things　in　IoT　is　introduced,　including　the　selection　of　representation　tool,　structural　definition　for　information　of　things　and　concrete　definition　for　information　of　things.　The　method　can　be　a　basis　for　standardization　of　things＇　information,　connection-technology-independent　middleware　and　applications　for　IoT　in　future.　©　2020　IEEE.