The invention relates to a full-automatic dry powder press floating-type core rod cylinder device applicable to a full-automatic dry powder press and suitable for forming multi-step and multi-layer complex abnormal-shaped parts. The full-automatic dry powder press floating-type core rod cylinder device comprises a worm-gear case base plate, a piston, a core rod, a cylinder body, a cylinder cover, a core rod stroke adjustment mechanism and a core rod cylinder height adjustment mechanism, wherein the core rod stroke adjustment mechanism comprises a worm-gear case, a worm gear, a worm, an adjusting shim, a standstill locking key, a worm-gear case blind-hole flange, a worm-gear case through-hole flange, an adjusting threaded sleeve, a first belt brake speed-reducing motor, a first coupling, a first motor mounting bracket, a long flange sleeve, a connecting shaft and a telescopic universal coupling; and the core rod cylinder height adjustment mechanism comprises a cylinder body jacket, a sliding bearing, a worm shaft, a worm gear sleeve, a press cover, a stop block, a second belt brake speed-reducing motor, a second motor mounting bracket, a second coupling, a mounting bracket, a first mounting bracket through-hole flange, a second mounting bracket through-hole flange and a mounting bracket blind-hole flange.