Abstract: Well bore heating can increase crude oil temperature, improve crude oil mobility, reduce the resistance of crude oil flowing in well bore, and thus effectively solve theproblem of difficult to produce viscous crude oil from well bore. This paper introduced the successfully experiences of oil production test and production test of viscous crude oil by use of electric heating technique in Shengli oil field, evaluated the advantages and disadvantages of well bore electric heating technique. This technique has played a greater role in extending oil producing period of steam soaking well, preventing sucker rod from breaking and falling,extending pump detection period, decreasing down hole job, obtaining reliable oil production test and production test data, further proving up viscous oil reserve, and increasing economic benefit.