Abstract: There are many multipaths in co-time co-frequency full-duplex (CCFD) self-interference channels in shielded room environment, so the study of self-interference channels has an important reference value. Measurements and characterizations are rarely involved at self-interference channels of CCFD in the shield room environment. In this paper, the measurements and analyses are performed at 2.6 GHz under typical indoor environment with channel sounder based on vector network analyzer. By analyzing the measurement data, the empirical channel characteristics such as path loss, the RMS delay spread and the Ricean K-factor have been extracted. Results show that the path loss is the logarithmic decrement with the increase of distance between Tx and Rx antennas. The statistics of root mean square (RMS) delay follows the lognormal distribution. The RMS delay increases with increasing the distance between Tx and Rx antennas. The statistics of K factor follows the normal distribution. The K-factor decreases with increasing the distance between Tx and Rx antenna.