The morphological characteristics of hemocytes in peripheral blood were investigated in Theloderma corticale by the Wright-Giemsa staining method and manual counting of blood cells．The results showed that the peripheral hematocytes of the T. corticale were composed of erythrocytes, neutrophils, basophils and eosinophils, lymphocytes, monocytes, and thrombocytes (Fig. 1). Erythrocytes mostly were oval, elliptical and few were teardrop-shaped, pear-shaped, comma-shaped, spindle-shaped cells, and their mean density was 2.43 × 105 cells/mm3. Occasionally, erythrocytes undergoing direct division or mitosis were observed. The mean of leucocytes was 1.74 × 104 cells/mm3. The proportions of small lymphocytes, large lymphocyte, monocytes, neutrophils, basophils and eosinophils were 40.02% ± 1.77%, 10.83% ± 2.53%, 23.17% ± 3.16%, 10.08% ± 4.62%, 9.25% ± 2.69% and 6.72% ± 1.50%, respectively. Single thrombocyte was ovoid or spindle-like in shape and cluster thrombocyte was round and irregularly round in shape (Fig. 2 and Table 1).