The invention provides a lithium iron phosphate battery charging method and apparatus. The charging method comprises the following steps: temperature values of all electrical cores in a lithium iron phosphate battery are collected; according to the collected temperature values, a reference temperature value is determined; based on the reference temperature value, a charging current value is calculated; based on the calculated charging current value, the lithium iron phosphate battery is charged. When the reference value is in a preset low temperature zone, the charging current value increases as the reference temperature value goes up; when the reference temperature value is in a preset high temperature zone, the charging current value decreases as the reference temperature value increases; when the reference temperature value is in a normal temperature zone between the high temperature zone and the low temperature zone, the charging current value is a constant current value. According to the lithium iron phosphate battery charging method provided in the invention, influence exerted on the battery by battery temperature during charging process is taken into consideration, damage on the battery can be prevented during large current charging processes, usage safety of the battery is improved, and the service life of the battery is prolonged.