The invention discloses a high-precise and high-synchronous novel analog signal distributor, comprising a low-pass filter and a signal isolating circuit; high-frequency interference of a signal is reduced by using the low-pass filter so as to improve signal quality; and then the signal is isolated by using three linear optical couplers ISO (International Standardization Organization) 124 in the signal isolating circuit, so that an isolating direct current voltage between an original secondary side and a secondary side is 1,500V; the three-way isolating signal is amplified by using three operational amplifiers; zero wander at an output end is regulated by a zero circuit at an input end; gain is regulated by using a reverse proportion circuit at the input end; and one-way analog quantity realizes generating the same three-way analog quantity so as to be output. The analog signal distributor provided by the invention has the advantages of high precision, high synchronism and capabilities of increasing quantity of a signal source and saving cost greatly.