The debris flow should be managed with the principle that takesprevention as the major point and combines with renovation as otherengineering disaster is done. To ensure the development of mountainoustown and industry as well as the safty of railway

road and shipping

on performing the study of distribution mechanism

causes and nature ofdebris flow

it is suggested that while conducting engineering renovation(hard control) the study on soft control be paid special attention

that is

to research forecasting and warning system to inspect

to establish thewarning and disaster prevention system suitable to this department ordistrict

to set up laws and regulation

to bring the power of flood preven-tion branch into full play

social organization and individual person in or-der to keep the debris flow harm within limit and decrease the disasterloss to the least level through various kind of propagating intermediumand population of disaster prevention practices.