Abstract: The invention of continuously variable transmission drive system for electric vehicles comprises a housing 210, a first motor 220, a second motor 230, a first gear assembly 240 including a sun gear 241 having a main input shaft 241a connected to a first motor 220, an inner ring gear 242 arranged around the sun gear 241, planetary gears 243 arranged between the sun gear 241 and the inner ring gear 242, and a carrier 244 having an output shaft 244a connected to the shafts of the planetary gears 243, and a second gear assembly 250 including a sub-drive gear 251 having a sub-input shaft 251a connected to a second motor 230, an outer ring gear 252 forming one body with the outer side of the inner ring gear 242, and an idler gear 253 transmitting the driving force of the second motor 230 to the outer ring gear 252.