On May 17, 2002, landslide took place in Nanping county, Fujiang province.The debris flow came into being at foot of the landslide.After investigating the hazard, the cause of landslide are analyzed.The main causes are long-time rainstorm, advantageous relief geologic conditions, and unscientific human activities, etc.Through contrasting the landslide with other hazards, the countermeasures of controlling hazards in the area are put forward.For the sake of avoiding similar tragedies, science popularization education must be strengthened.