In this study, we theoretically studied and simulated the spatial resolution characteristics of a pulse dilation framing camera using Monte Carlo, finite difference, and finite element methods. The electronic pulses produced by the photo-cathode (PC) are first axially stretched through the pulse dilation device and then imaged on a microchannel plate using an imaging system consisting of three short magnetic lenses. When the imaging ratio is 1∶1 and the position of the electronic pulse emission is within 15 mm of the diameter of the PC surface, the spatial resolution is better than 10 lp/mm. Furthermore, we studied the relationship between spatial resolution and electronic pulse emission position, PC bias voltage, and the number of short magnetic lenses. Our results show that the spatial resolution is positively correlated with the emission position of electron pulse, PC bias voltage, and the number of short magnetic lenses.