The advantages and disadvantages of different investment promotion methods are different. The advantage of online channel is that it is nationwide, which means that once the investment promotion advertisement is published, it can be seen by the target users all over the country, and the operation is simple. Of course, there are also some disadvantages, such as trust-oriented and fierce online competition, such as cooperation with professional investment promotion websites. Then this website is definitely not limited to your own products, which involves the ranking problem within the station (this issue will be discussed later), while TV advertisements are only suitable for large-scale ones. Some things in offline mode can be communicated face-to-face, and the trust is higher. The same disadvantages are also obvious. For example, medical exhibitions are affected by the region and exhibition scale. Larger medical exhibitions, such as Beijing Pharmaceutical Fair, Shanghai Pharmaceutical Fair, Guangdong Pharmaceutical Fair, etc., in addition, advertising forms such as newspapers, magazines, buses, elevators, etc. are mostly limited to a certain area, and it will take a lot of money to expand the area.