One of the most common natural catastrophic in the world is Landslides causing large casualties and large economic losses. In 1994, a landslide disaster struck a part of Nepal country along the llam road. This landslide caused devastation in the country at that time. In this paper, an evaluation of this landslide was conducted and deep study to mitigate the danger of these kinds of incidences. Preventing landslides is permanently significant to ensure a streamlined flow of traffic when there are roads on the area with a potential landslide incidence. The slope stability degree of the mass of landslide area is evaluated before and after preventing landslide to occur. Many slope stability methods are used such as ordinary sliced method, Bishop simplified method, Janbu simplified method, Spencer method, method of Corps of engineers and gle Morgenstern price method. The factor of safety calculated by these methods is varied by around 9 percent. The calculated factor of safety was less than one at the time of landslide incidence. In order to increase the factor of safety, various technique were suggested to mitigate Landslide such as lowering the water table, using high berm at the toe of the slope and using grouted tiebacks to support the soil mass. Lowering the water table only was not adequate to increase the factor of safety to 1.5 neither using high berm. The most active technique to increase the factor of safety was grouting tiebacks to support the soil mass at the landslide area. This technique contributed in increasing the factors of safety s more than 2 for static state and more than 1.1 for dynamic state. The software program, Rockscience slide 6.0, is used to verify the calculations and analyses from excel sheet for the ordinary and Bishop simplified method.