The magnetic and configurational properties of Ising polymer chains on simple cubic lattice are simulated using annealing Monte Carlo technique．Spontaneous magnetization at low temperature is found for magnetic polymers

and the critical temperature is estimated as Tc=1.77±O.05(J／kB) for long chains．At Tc

the chain also undergoes a collapse transition from a random coil at high temperature to a compacted globule at low temperature. For all simulated chain lengths

it is found that the configurational properties change very little above Tc but obviously below Tc. The analysis of chain dimension

shape

nearest neighbor number as well as energy shows that the phase transition of Ising polymer chains results from the cooperation of segment movement and Ising interaction.