Oil,knownas"thebloodofindustry",hascloserelationshipwiththenationaleconomicgrowthandtheenergysafety.Thefluctuationoftheinternationaloilpricedeeplyimpactsthelifebloodoftheworldeconomy,andalsobingsvariouskindsofdirectorindirectinfluencetoourcountry'sdevelopmentofsocialeconomy.Theriseofinternationaloilpriceraisesmanythinkings.Thispaperthinksthattheriseofthepriceistheresultofcombinedactionofmanyfactors.Itmainlyshowsthat,first,therapidgrowthofoildemandandrestrictofoilsupplyleadstotheexpectationofsupplyanddemandtobetight.Second,thecontinuousdevaluationofU.SDollaragainstkeycurrenciesistheintuitivereflection.Third,thespeculationaddsfueltothefireoftherisingoilprice.Fourth,theinstabilityofgeopoliticsincreasestheworryofmarketabouttheoilsupply.
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