1、 Too much light

1. Reason: except for a few varieties such as Cymbidium, most orchids don't like strong light irradiation. If they are raised in places with high light intensity, their leaves will be sunburned by strong light and turn yellow

2. Treatment method: at this time, use scissors to cut off the leaves completely tanned on the plant. Then, move it to a well ventilated place without strong light, or use a shading net to shade it. After a period of time, it can recover

2、 The temperature is too low

1. Reason: orchids like warmth, not particularly cold resistant. If the plant is kept at a particularly low temperature for a long time, it will grow poorly and turn its leaves yellow

2. Treatment method: first move the orchid to a place with a temperature between 18-25 ℃, then appropriately increase its light receiving time, and wait until it recovers

3、 Lack of moisture

1. Reason: if you don't water the orchid for a long time during the maintenance, it will lack water, which may also cause its leaves to turn yellow

2. Treatment method: at this time, water it in time. Water the flower soil thoroughly first, but don't let water accumulate in the soil. Then appropriately increase the frequency of watering to supplement water for it