The nursing principles included mental assistance, drug administration on time and mixed drug administration with three steps to alleviated and control the cancerous pain of patients.

This paper lead to the principle of choose of cut ting speed for ladder machine parts by explaining the relation of cutting speed for ladder machine parts and cost.

The traditional means of treatment of cancer pain has been unable to effectively solve the problem of cancer pain, so at present we prefer the three ladder analgesic treatment programs of caner.