The study aimed todetermine the extent of the exercise of the automatic deputation by the local chief executive as perceived by the respondents and the level of impact of the exercise of automatic deputation by the local chief executive on the different types of police functions. The research study utilized a descriptive methodology. The researchers designed a questionnaire. The statistical tools includedweighted mean, Pearson r Product Moment Coefficient Correlation (r), and theT-Test for Correlated Datain order to determine the significance of the relationship between the independent and dependent variables. The findings revealed that the extent of the lawful exercise of the automatic deputation by the local chief executive positively impacts police functions. The authority of the mayor to control and supervise the Philippine National Police is an effective instrument of the state which guarantees the delivery of professional and excellent police services to the public. Thus, the authors would like to offer that the police officers should deliver professional services with impartiality and in the interest of the public should conduct themselves in accordance with standards and laws the local chief executive sustains honest adherence to legal mandate in the exercise of control and supervision over the PNP theCongress of the Philippines should review Republic Act 8551 in order to reinforce the mechanisms that would entirely prevent abuses by local chief executives.