The historical position of Arab science and culture in the development of natural science lies not only in its preservation of the scientific contribution of ancient Greece, but also in its communication with western science and culture. Arab scholars independently developed and enriched science.

(1) Arabs' important contribution to science is the creation of Arabic numerals. Before arithmetic appeared, only some learned people knew it. With the appearance of Arabic numerals, mathematics became popular. Arabs also inherited and developed the method of Indian mathematicians to deal with knowledge numbers and developed algebra. The word "algebra" comes from a book written by the famous Arab mathematician Al-Hua-Mozi.

(2) In astronomy, Arabs accepted Ptolemy's geocentric system, but made their own contributions to astronomical observation. The systematic and uninterrupted astronomical observation activities of Arabs discovered the change of solar eccentricity and corrected many astronomical constants. Biruni boldly put forward the view that ptolemaic system did not conform to the actual structure of the universe, and thought that Ptolemy's argument that the earth was motionless and in the center of the universe could also prove the movement of the earth around the sun. Astronomers in the European Renaissance, including Copernicus, made a revolution in astronomy by using the astronomical observation data of Arabs for 900 years.

(3) Arabic medicine is a continuation of ancient Greek medicine, and at the same time, it has increased knowledge about new diseases and new drugs. Ibn, the most famous medical scientist at that time? Senna completed a million-word encyclopedic medical classic, which is the highest achievement of Arab medicine. Ibn, who used to practice medicine in Damascus? A Le-Nafei once questioned Galen's argument that blood can flow through the heart diaphragm, thinking that blood flows from the right ventricle to the lung and then to the left ventricle, revealing the small circulation process of blood, which was 300 years earlier than that discovered by Sylvie later. Since the 8th century AD, alchemy has also arisen in Arab countries, which has promoted the progress of experimental chemistry. Arabs absorbed the concepts of alchemy in China and India, and also used sulfur and mercury as basic elements, but China people focused on smelting.