The squeezed probe light transmission characteristic through a double electromagnetically induced transparency in tripod-type atomic system was investigated by using the Heisenberg-Langevin approach. The results show that, the squeezing can survive in two electromagnetically induced transparency windows independently. The output squeezing in tripod-type atoms can be better preserved when the frequency detunings of two coupled fields are equal. It is found that the output squeezing is also determined by the Rabi frequency of coupling fields, optical depth and dephasing rate of atoms, and detection frequency. This study has a potential application in multi-channel quantum memory for quantum network.