(1) Technical inaccuracy: Gene technology transfers heterologous genes from one organism to another. Although its DNA can be precisely cut, it cannot accurately implant new genes into another organism, thus affecting the basic functions of other genes in this organism. Scientists can't predict the new unknown proteins after plant genotyping, nor can they predict the immature effect on the receptor completely and accurately. (2) Side effects: Gene technology is just like a surgeon performing heart surgery. Scientists can't fully know in advance that DNA surgery on organisms may lead to mutation, which will cause harm to the environment and people. Although the experiment is very mature, we can't grasp all the information that may affect human beings in the face of the strong pressure of nature. (3) Large-scale crop yield reduction: Gene technology gains profits by constantly selling seeds, which means that when farmers plant transgenic seeds, all the plants planted have the same genes. When fungi, viruses and pests attack these special plants, serious yield reduction will occur. (4) Seriously affect the whole food supply: insects, birds and wild animals will carry transgenic seeds to nearby fields. When transgenic plants produce pollen, it will cross-pollinate transgenic crops and wild animals, and all crops, organic matter or inorganic matter are easily polluted by cross-pollination.