At present, the core drilling rig that applied in geological drilling work by geological prospecting enterprise can be classified into two kinds--one is hydraulic spindle type core drilling rig, the other all hydraulic top-head drive core drilling rig, while the former takes up the major part in the application. As the geological prospecting industry recovers, some enterprises have already begun to adopt all hydraulic top-head drive core drilling rig in their drilling works. Consequently, the market demand of all hydraulic top-head drive core drilling rig has increased steadily. In 2013, affected by the unfavorable factors of the decrease of the global metal demand and the reduction of the investment into solid mineral resources exploration, the sales volume of core drilling rig has decreased noticeably compared that of 2012, and it was about 4,400 sets in 2013, with market scale reaching CNY 810 million. As the consumption of the global mineral resources has increased rapidly, the mineral resources lying in shallow underground have been nearly exhausted, so the geological prospecting has moved to deep underground. Now, the mining depth of underground mineral resources in China is mainly less than 500 meters, and the geological prospecting is mainly less than 1000 meters, and in future China will proceed the geological prospecting in deeper underground where will reach 1500-2500 meters. As the geological prospecting becomes more difficult, the requirement of drilling rig performance is getting higher, and the upgrading of the products is faster, so it is expected that the market demand of large deep drilling rig will encounter rapid growth in the coming future.