A chemical vapor deposition apparatus and method are provided. The apparatus includes a heater disposed on a bottom of a process chamber for heating a wafer laid on the heater. A shower head is disposed above the heater for injecting a reaction gas. The apparatus comprises a shutter chamber provided at an outer side of the process chamber. A transfer robot is installed in the shutter chamber having a blade at a front end thereof. The transfer robot is reciprocated within the process chamber by driving device. A shutter disk is laid on the blade of the transfer robot. The shutter disk is located on the heater of the process chamber by the transfer robot to prevent radiant heat generated from the heater from being transferred to the shower head.