A　sixth-order　high-temperature　superconducting　(HTS)　balanced　bandpass　filter　(BPF)　with　switchable　selectivity　and　stopband　is　proposed　in　this　paper.　Base　on　the　use　of　asymmetric　coupled　stepped-impedance　resonators　(SIRs),　the　upper　differential-mode　(DM)　stopband　can　be　extended,　and　high　common-mode　(CM)　suppression　can　be　performed　within　passband.　High　selectivity　is　acquired　for　the　use　of　high-order　structure　and　cross　coupling　to　introduce　transmission　zeros　(TZs).　The　configuration　utilizing　switchable　cross　coupling　is　eventually　employed　to　perform　either　Elliptic　response　with　steep　band　edge　or　Chebyshev　response　with　deeper　and　wider　DM　and　CM　stopband.　The　circuit　is　simulated　by　fullwave　simulator　within　superconducting　parameters.　High　quality　factor,　wide　stopband,　and　low　insertion　loss　can　be　obtained　from　the　simulation　in　the　implemented　switched　circuit.　©　2018　IEEE.