Why is my chlorophytum like this? Is it rotten because of too much watering?

This is mainly because when you water, water will accumulate on leaves and stems. After a long time, the leaves in the water will rot, yellow and die. This disease is easy to cause stem rot and lead to the death of the whole chlorophytum plant. Be careful not to pour water on it in the future, but to pour water into it. When watering, it depends on whether the surface soil of the basin is white or cracked. If it is wet, don't pour water. Proper loosening of soil is of little effect now, just put it in a ventilated place. When there is water under your armpit, suck it dry with a brush, and this will not happen.