Uninterrupted power system capable of continuously supplying power

The invention discloses an uninterrupted power system (UPS) capable of continuously supplying power, which comprises a power generator set unit, a UPS unit, a selection switch (8) and a control unit (9), wherein the power generator set and the UPS unit form a standby loop which is respectively connected with loads through the selection switch (8), when a mains supply loop (11) is abnormal, the control unit (9) controls the selection switch (8) to be switched into the mains supply loop (11) for providing standby power to the loads, thus uninterrupted power supply is realized. According to the invention, under the condition of main supply failure, the UPS can be switched to a standby power generator for supplying power, so that the uninterrupted power supply for residual families is realized; and meanwhile, a duration-free sustainable energy-saving environmental-friendly power supply mode is met.