The stability of β-cyclodextrin-anisaldehyde (β-CDA) inclusion complex was investigated by TG and DSC. The weight loss of β-CDA 9H 2 O takes place in three stages: the dehydration occurs at 50-120°C; the dissociation of β-CDA occurs at 210-260°C; and the decomposition of β-CD begins at 280°C. The kinetics of the dissociation of β-CDA in flowing dry nitrogen was studied by means of thermogravimetry both at constant temperature and with linearly increasing temperature. The results show that the dissociation of β-CDA is dominated by a two-dimensional diffusion process (D 2 ). The activation energy E is 139.23 kJ mol - 1 , the pre-exponential factor A is 1.0394 10 1 2 min - 1 .