The invention disclose a high safe non-ignitable piezoresistor, which comprises the following parts: a piezoresistor chip with two corresponding surfaces, the first leading electrode electric connected with a surface of the piezoresistor chip, the second leading electrode electric connected with the other surface of the piezoresistor chip, wherein the outboards of two corresponding surfaces are provided with a low-melting point metal conductive layer which can melt at 155Deg.C-450Deg.C, the intermediate of two outboard low-melting point metal conductive layers doesn' t have electric connection of the good conductor. The invention guarantees that the current foldback fuse or the current foldback switch can break arc current quickly before the shell of the pieziresistor is on fire, which avoids the occurrence of fire.