A multi-CVT drive system having an epicyclic gear set, which utilizes the rotary kinetic power of a rotary kinetic power source to directly drive the epicyclic gear set, or to indirectly drive the epicyclic gear set through an input end clutch device and/or a transmission device, the system further comprising: two continuous variable transmissions respectively installed between two output shafts of the epicyclic gear set and a load driven thereby; a common load body installed with a rotary kinetic power source, relative operation and transmission interface devices, and wheel sets driven by the rotary kinetic power source or non-powered wheels not being driven by the rotary kinetic power source, thereby carrying the common load body, wherein an output end of the kinetic power source outputs directly or through a clutch device, wherein the CVTs are individually installed and each respectively drive wheel sets on either side of the common load body, the CVTs are capable of individually and automatically varying speed ratio along with the loading torque, the system further comprising: an external operation interface arranged to control the operational status of the rotary kinetic power source and/or to control the operation of one or both of the CVTs and/or a related clutch device to actively control the speed ratio, so as to perform all or a part of the following controls, including: actively and synchronously controlling the transmission speed ratios of the CVTs; actively and individually controlling the transmission speed ratios of one of the CVTs; passively controlling the transmission speed ratios between the CVTs along with the rotation speed at the input end and/or the loading torque; and a control unit arranged to control the operational state of the rotary kinetic power source, and to control the operational speed ratios of the CVTs. two continuous variable transmissions respectively installed between two output shafts of the epicyclic gear set and a load driven thereby; a common load body installed with a rotary kinetic power source, relative operation and transmission interface devices, and wheel sets driven by the rotary kinetic power source or non-powered wheels not being driven by the rotary kinetic power source, thereby carrying the common load body, wherein an output end of the kinetic power source outputs directly or through a clutch device, wherein the CVTs are individually installed and each respectively drive wheel sets on either side of the common load body, the CVTs are capable of individually and automatically varying speed ratio along with the loading torque, the system further comprising: an external operation interface arranged to control the operational status of the rotary kinetic power source and/or to control the operation of one or both of the CVTs and/or a related clutch device to actively control the speed ratio, so as to perform all or a part of the following controls, including: actively and synchronously controlling the transmission speed ratios of the CVTs; actively and individually controlling the transmission speed ratios of one of the CVTs; passively controlling the transmission speed ratios between the CVTs along with the rotation speed at the input end and/or the loading torque; and a control unit arranged to control the operational state of the rotary kinetic power source, and to control the operational speed ratios of the CVTs. an external operation interface arranged to control the operational status of the rotary kinetic power source and/or to control the operation of one or both of the CVTs and/or a related clutch device to actively control the speed ratio, so as to perform all or a part of the following controls, including: actively and synchronously controlling the transmission speed ratios of the CVTs; actively and individually controlling the transmission speed ratios of one of the CVTs; passively controlling the transmission speed ratios between the CVTs along with the rotation speed at the input end and/or the loading torque; and a control unit arranged to control the operational state of the rotary kinetic power source, and to control the operational speed ratios of the CVTs.