Solutions for excessive oil secretion on a male cat's tail:
1. You need to remove the hair from the cat's tail area, and then use a shampoo and conditioner with good oil-removing effect to wash it, keeping the area dry and clean.
2. Use topical sneeze sprays with antibacterial and anti-inflammatory effects locally. If necessary, health products that regulate endocrine function can be used.
3. Avoid letting the cat lick the affected area, as this may worsen the symptoms. If the condition worsens, it is recommended to consult a professional veterinarian promptly. 
The reason why male cats have excessive oil secretion on their tails:
1. It may be that male cats that have not been spayed/neutered secrete too much male hormones, or that a small number of female animals have hormonal imbalances that cause excessive oil secretion from their tails.
2. If a cat is infected with folliculitis, bacterial folliculitis can also cause excessive sebum secretion.
3. If a cat eats high-fat food for a long time, it will cause excessive oil secretion from its hair follicles, resulting in a lot of oily secretions from its tail.
