Modified copper powder and preparation method thereof and electronic paste

The invention provides modified copper powder and a preparation method thereof and electronic paste. The modified copper powder comprises copper powder and a modifying agent coated on the surface of the copper powder, and the modifying agent is polyvinylpyrrolidone and/or a polyvinylpyrrolidone derivative. According to the modified copper powder and the preparation method thereof and the electronic paste, the oxidation rate of the copper powder is low, and both resistance and resistivity of the electronic paste prepared by the modified copper powder are lower than the resistance and the resistivity of the electronic paste of the embodiment.