The utility model provides a novel coiled tubing equipment fill head motor drive system, includes constant delivery pump, safety relief valve, overflow valve, fixed pressure -difference valve, automatically controlled switching -over choke valve, oil tank, choke valve, the constant delivery pump be connected with oil tank, fixed pressure -difference valve, fixed pressure -difference valve be connected with automatically controlled switching -over choke valve, automatically controlled switching -over choke valve be connected with A mouth, B mouth, the constant delivery pump exit be connected with safety relief valve, a mouth and B mouth are connected on the fill head motor, a mouth and automatically controlled switching -over choke valve between B mouth and automatically controlled switching -over choke valve between respectively be connected with a choke valve, two the choke valve between be connected with the shuttle valve, choke valve and shuttle valve between respectively install asafety relief valve, the shuttle valve still be connected with remote pressure regulation valve, guide's mouth of remote pressure regulation valve and fixed pressure -difference valve be connected.