Whether　Z=126　is　a　proton　magic　number　has　been　controversial　in　nuclear　physics.　The　even-even　Ubh126　isotopes　are　calculated　based　on　the　DRHBc　calculations　with　PC-PK1.　The　evolutions　of　quadrupole　deformation　and　pairing　energies　for　neutron　and　proton　are　analyzed　to　study　the　possible　nuclear　magicity.　Spherical　shape　occurs　and　neutron　pairing　energy　vanishes　at　N=258　and　350,　which　are　the　results　of　possible　neutron　magicity,　while　the　proton　pairing　energy　never　vanishes　in　Ubh　isotopes,　which　does　not　support　the　proton　magicity　at　Z=126.　In　the　single-proton　spectrum,　there　is　no　discernible　gap　at　Z=126,　while　significant　gaps　appear　at　Z=120　and　138.　Therefore,　Z=126　is　not　supported　as　a　proton　magic　number,　while　Z=120　and　138　are　suggested　as　candidates　of　proton　magic　numbers.