Moc Chau is a mountainous, highland and border district, located in the southeast of Son La province, 180 km northwest of Hanoi, with a natural area of 1,081.66 km2, accounting for 7.49% of the area. Son La province, ranked 8th out of 12 districts and city of Son La province. Moc Chau district has Highway 6, Highway 37 and Highway 43 passing through, sharing the border with Vietnam – Laos with a length of 40.6 km.
Moc Chau has all four distinct seasons, with a cool and cool highland climate throughout the year. The average temperature per year is about 18-20ºC, the average annual rainfall is 1,500 – 1,600 mm and the average humidity is 85%.