GY-50-1 portable engineering drill is adopted with hydraulic pressure feeding structure, it can proceed attacking and gyrating drilling, and can be towing removal. The drill is usually used for the engineering geological reconnaissance in road,bridge foundation,dam site,prospecting, or industrial and civil architecture, it can also used in drilling exploratory blast hole. The drill is applicable in plough layer,clay,sand seam,sand and stone seam,sand and boulder bed in Quaternary overburden layer. It can get tube sample in varied depth, and it can used in coring and boring in bedrock.