To compare the efficacy of laparoscopic assisted transanal total mesorectal excision（TaTME）and crvthera in T_2-3N₀M₀ rectal cancer patients.

The clinical data of 63 patients with T_2-3N₀M₀ rectal cancer from May 2017 to March 2018 were retrospectively analyzed. According to different treatment methods，the patients were divided into TaTME group（n=33 cases）and hypothermia group（n=30 cases）. TaTME group：treated with laparoscopic TaTME treatment；Hyperthermia group：treated with undergo cryotherapy. SPSS 23.0 software was used to process the data. Wexner score of anal incontinence and Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire（PISQ）score were expressed in（

There was no statistical significant difference between the two groups in Wexner score，urinary function grade Ⅱ，Ⅲ and Ⅳ，cure rate and recurrence rate of rectal cancer at 1 and 3 years after operation（P>0.05）；the PISQ scores of patients in the ultra-low temperature group were higher than those in the TaTME group at 1 and 3 years after operation，and the proportion of grade I micturition function was higher than that in the TaTME group（P<0.05）；the incidence of complications in the hypothermia group was lower than that in the TaTME group（P<0.05）.

Both laparoscopic assisted TaTME and cryotherapy can preserve the anus in patients with T_2-3N₀M₀ stage rectal cancer，with a high cure rate. Laparoscopic assisted TaTME is feasible for lymph node dissection，and cryotherapy can protect the sexual function and micturition function of patients with lower complications.