Mingma Sherpa, chairman of Seven Summit Treks, said Kami Rita reached the summit at 7:50 am on Wednesday.
Kami Rita, 49, who hails from Thame village in Solukhumbu district, broke the record of 21 Everest ascents set by Apa Sherpa and Phurba Tashi Sherpa in 2017. Apa and Phurba have already announced retirement.
On May 16 last year, Kami Rita climbed Everest for 22nd time.
Kami made his first ascent of Everest in 1994 when he was 24 years old.
The 2019 Everest climbing season officially began on Tuesday with eight high-altitude Nepali climbing guides making it to the highest peak in the world.