Cucumber softening may be due to the lack of trace elements. In the process of planting cucumber, fertilizer should be added from time to time. When adding fertilizers, we should choose fertilizers rich in trace elements to fertilize. For example, NPK compound fertilizer or seedling lettuce micro-fertilizer can supplement trace elements such as nitrogen, phosphorus, potassium, copper, iron and silicon needed for cucumber growth. This will promote the growth and expansion of roots, leaves and stems of cucumber, and the cucumber will not become soft.