Fifty-six cases with lung carcinoma were detected for peripheral blood T lymphocyte by direct staphylococcal protein A (SPA) bacterial rose ring for carcino-embryonic antigen (CEA) by radioimmunoassay, and the relationship between T lymphocyte. CEA and Syndrome of TCM was explored. The results were as follows:the values of OKT3, OKT4, OKT4/OKT8 were lower in the lung carcinoma than that in healthy subjects (P < 0.05-0.01), but OKT8 was higher (P < 0.05); The values of T lymphocyte lowered or increased in the order of Yin Deficiency with internal Heat, Qi Stagnation with blood stasis, Phlegm-Dampness in Lung, Qi-Yin Deficiency, but that of CEA was the highest in Qi-stagnation with blood stasis. There was a significant difference between all Syndrome-types of TCM and the healthy subjects (P < 0.01). Therefore, it is suggested that the values of peripheral T lymphocytes and CEA with the lung carcinoma were regarded as good referential parameters in reflection the condition of Deficiency in Vitality and Excess in Superficiality, which offered the objective evidence for the TCM treatment.