The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
In Chinese Medicine cholangitis can be treated by one herbs that we have on record. Here is the list below.
Milk thistle seeds might help with cholangitis
Why might Milk Thistle Seed (Shui Fei Ji) help with cholangitis?
Because it is a herb specifically indicated to treat cholangitis as can be seen on Milk Thistle Seed's page.
Milk Thistle Seeds is a Cool herb that tastes Bitter. It targets the Gallbladder and the Liver.
Its main actions are: Clears Heat and dispels toxicity. Regulates the flow of Qi in the Liver and tonify Gallbladder.