Because the cold tolerance of Cinnamomum camphora is relatively weak, it is essential to protect Cinnamomum camphora seedlings from cold and freezing. The main measures are to protect the stems, branches and roots of the soil ball. Generally, the purpose of transplanting Cinnamomum camphora is to afforest, and it is necessary to achieve the effect of anti-freezing without affecting the beauty of greening, so we adopt the method of three-layer anti-freezing to protect Cinnamomum camphora. We use straw rope on the first floor, linen on the second floor and straw on the third floor. Another meaning of "three-layer anti-freezing protection" is to keep warm with loose mountain mud, plastic film, straw bag and so on. According to past experience, the trunk should not be insulated with plastic film. Because there are more rainy and snowy weather in winter, once water enters the plastic film, it is easy to accumulate water, which often induces the trunk to blacken and fester, and the straw has good drainage, so there is no water accumulation problem.